{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"利用内耗方法对空冷B2 Fe-Al合金中原子缺陷的运动特征进行了研究.在210℃(称为P1峰)和410℃(称为P2峰)附近观察到两个与样品热空位浓度密切相关的弛豫型内耗峰.研究表明,P1峰产生于应力作用下双空位(V_(Fe)V_(Al))的重新取向,而P2峰起源于反位置原子与Fe空位之间的相互作用.对于富Fe的B2 Fe-Al合金,P2峰产生于应力作用下三倍体缺陷(2V_(Fe)Fe_(Al))的重新取向;而对于富Al的B2 Fe-Al合金,P2峰则产生于应力诱导下Al反位置原子在Fe空位之间的运动.","authors":[{"authorName":"吴杰","id":"297748fb-1fad-44bd-9eca-d853c6b03b49","originalAuthorName":"吴杰"},{"authorName":"韩福生","id":"a977d131-32f1-4e81-a3fe-2cf749aa26cd","originalAuthorName":"韩福生"},{"authorName":"崔洪芝","id":"e18abef3-9243-48e2-acb6-90ed6bd3ede0","originalAuthorName":"崔洪芝"},{"authorName":"迟静","id":"b8ade742-f6e3-49b9-ab7d-459f287bc87f","originalAuthorName":"迟静"},{"authorName":"姚树玉","id":"f4be2dc8-6307-4170-8c94-ca52ab8a6bcc","originalAuthorName":"姚树玉"}],"doi":"10.3969/j.issn.1001-4381.2009.11.014","fpage":"59","id":"d05e6b2f-f427-4b92-90ec-a676c46a5f56","issue":"11","journal":{"abbrevTitle":"CLGC","coverImgSrc":"journal/img/cover/CLGC.jpg","id":"9","issnPpub":"1001-4381","publisherId":"CLGC","title":"材料工程"},"keywords":[{"id":"30702dfc-cf8a-4a21-b1a0-cdce0cf8c315","keyword":"B2","originalKeyword":"B2"},{"id":"86682ba4-16ca-4547-b224-887097fa2c46","keyword":"Fe-Al合金","originalKeyword":"Fe-Al合金"},{"id":"a72ba3f2-3536-487e-a55c-996d2d448b32","keyword":"内耗","originalKeyword":"内耗"},{"id":"0c49e062-5a95-4b28-a1e3-3be2b931a471","keyword":"空位","originalKeyword":"空位"},{"id":"a6592c1b-6178-45d2-b604-5d8727720842","keyword":"反位置原子","originalKeyword":"反位置原子"}],"language":"zh","publisherId":"clgc200911014","title":"B2 Fe-Al合金中与空位有关的弛豫","volume":"","year":"2009"},{"abstractinfo":"利用内耗方法对Fe-Al合金中Al反位置原子的运动特征进行了研究。在410℃附近观察到了一个与合金热历史相关的弛豫型内耗峰,在快冷样品中内耗峰高度明显高于慢冷样品,而对于快冷样品,升温测量时内耗峰高度又明显高于随后的降温测量,这表明该内耗峰与快冷时残留的缺陷有关。由于该内耗峰激活能为1.88eV,与B2 Fe-Al合金中Fe空位的迁移能相当,因此该峰应产生于应力诱导下Al反位置原子在Fe空位之间的运动。","authors":[{"authorName":"孙蔚","id":"216e40f2-086f-4f0b-bf93-9f2cc31d6e80","originalAuthorName":"孙蔚"},{"authorName":"韩福生","id":"892be6d2-394f-4256-b5c6-4615ff482e79","originalAuthorName":"韩福生"},{"authorName":"吴杰","id":"2a6724ce-6150-4ff1-b610-e773f07d8b88","originalAuthorName":"吴杰"}],"categoryName":"|","doi":"","fpage":"311","id":"9ac63cb1-8f32-4797-8020-4c69b34c3355","issue":"3","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"d3c6fbd1-d308-4863-8708-2c2876325f3b","keyword":"B2","originalKeyword":"B2"},{"id":"9c9f77cc-0eca-472c-b9dc-e821b8a658e1","keyword":"internal friction","originalKeyword":"internal friction"},{"id":"6e86e76a-9a0d-4dc2-9410-e00f58c3007a","keyword":"Fe vacancies","originalKeyword":"Fe vacancies"},{"id":"16375e46-326e-4260-a0d1-f1fdffb5b0b3","keyword":"null","originalKeyword":"null"},{"id":"18d22292-4565-47b9-bfa4-fa58c2f83c13","keyword":"null","originalKeyword":"null"}],"language":"zh","publisherId":"0412-1961_2007_3_1","title":"Fe-Al合金中与Al反位置原子弛豫有关的内耗峰","volume":"43","year":"2007"},{"abstractinfo":"利用内耗方法对B2 Fe-Al合金的有序化过程进行了研究,并分析了有序化过程与原子换位运动之间的关系.对于油冷Fe47Al53合金,在570℃左右观察到一个内耗峰;但是对于炉冷样品,该峰并不出现.这个内耗峰具有典型的相变峰特征,XRD和DSC显示,该峰的出现与样品的有序化过程有关,它产生于反位链原子通过最近邻的空位向自身亚晶格位置的跳动. 油冷Fe57Al43合金中类似的峰出现在540℃附近.","authors":[{"authorName":"吴杰","id":"45ceaa38-054d-4dc0-8b1d-74c9dc82c929","originalAuthorName":"吴杰"},{"authorName":"崔洪芝","id":"d02cc5fb-8a77-4971-8744-fd02da2a24c2","originalAuthorName":"崔洪芝"},{"authorName":"迟静","id":"aed2bf04-18e4-4fe4-a062-65e6567f4c9f","originalAuthorName":"迟静"},{"authorName":"姚树玉","id":"736e93a5-6ae7-4880-bb50-615a7a20f036","originalAuthorName":"姚树玉"},{"authorName":"韩福生","id":"4e843483-3fbe-4e85-9910-1ab86cf1de66","originalAuthorName":"韩福生"}],"doi":"10.3321/j.issn:0412-1961.2009.04.003","fpage":"396","id":"b8134aa2-9c53-4f62-9605-e82d5b71da09","issue":"4","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"f43919d2-46fd-49d1-b3d5-d4e3c7d33f11","keyword":"B2","originalKeyword":"B2"},{"id":"1aab577f-46c1-4755-aa4c-be122b89924d","keyword":"Fe-Al合金","originalKeyword":"Fe-Al合金"},{"id":"59c2c769-cafc-4a9d-ba93-11195da996bb","keyword":"内耗","originalKeyword":"内耗"},{"id":"7d4f4177-aa25-44cb-bb88-01e7d960ddf6","keyword":"有序度","originalKeyword":"有序度"},{"id":"8234df4f-5d54-43bd-b155-0dad9ca5fc80","keyword":"反位置原子","originalKeyword":"反位置原子"}],"language":"zh","publisherId":"jsxb200904003","title":"Fe-Al合金有序化过程中的内耗峰","volume":"45","year":"2009"},{"abstractinfo":"The morphology and structure of melt spinning Ni-33.6at% Al doped with B and RE were investigated.The results show that the alloy consists of L10 martensitic grains and L12 Ni3Al at the grain boundaries when it contains no B and RE.The addition of 0.11-0.31wt% B can suppress the martensitic transformation and Ni3Al separation at the boundaries,and a supersaturated B2 single phase NiAl is obtained.The addition of 0.05wt% RE can eliminate Ni3Al precipitated at the boundaries and get complete martensite,but 0.2-0.8wt% RE addition can suppress the martensitic transformation, and supersaturated B2 single phase NiAl is obtained.The formation mechanism of supersaturated B2 single phase NiAl has been analyzed.","authors":[{"authorName":"SUN Baode","id":"692434ee-ebd5-4138-b54d-1c9c4ceed055","originalAuthorName":"SUN Baode"},{"authorName":"CHE Xiaozhou","id":"702bc811-29c4-4fea-ab5a-f46575ef5407","originalAuthorName":"CHE Xiaozhou"},{"authorName":"LIN Dongliang","id":"147c2828-245d-4ebf-9027-023ab75c0943","originalAuthorName":"LIN Dongliang"},{"authorName":"ZHOU Yaohe(Department of Materials Engineering","id":"684bd60f-99e4-4d60-aa5d-26fb6ad0f0a9","originalAuthorName":"ZHOU Yaohe(Department of Materials Engineering"},{"authorName":"Shanghai Jiaotong University","id":"0a311589-6665-467e-acf9-0d011a91b5e1","originalAuthorName":"Shanghai Jiaotong University"},{"authorName":"Shanghai 20030","id":"c904b17e-044f-4ad1-b000-771d560a4a13","originalAuthorName":"Shanghai 20030"},{"authorName":"China)(Department of Materials Science","id":"c669fae5-e7a9-4e62-bd6d-31f35da9d1d8","originalAuthorName":"China)(Department of Materials Science"},{"authorName":"Shanghai Jiaotong University","id":"a02b2fd3-ac94-426c-9f41-7b34179af8ba","originalAuthorName":"Shanghai Jiaotong University"},{"authorName":"Shanghai 200030","id":"02705863-e936-41d9-8101-23b272976aa1","originalAuthorName":"Shanghai 200030"},{"authorName":"China)","id":"19bbeef9-e3d0-4073-b592-68db6123793f","originalAuthorName":"China)"}],"categoryName":"|","doi":"","fpage":"89","id":"e27ddcf4-45e2-462e-9700-e123160396d7","issue":"2","journal":{"abbrevTitle":"JSXBYWB","coverImgSrc":"journal/img/cover/amse.jpg","id":"49","issnPpub":"1006-7191","publisherId":"JSXBYWB","title":"金属学报(英文版)"},"keywords":[{"id":"147f1257-bd10-4ab6-b1e6-8ad7e2297256","keyword":":NiAl","originalKeyword":":NiAl"},{"id":"17b2e4ce-f25a-4b61-ab5c-4d1344421c52","keyword":"null","originalKeyword":"null"},{"id":"632256e2-2f9c-4179-8cc0-be013f8e2c42","keyword":"null","originalKeyword":"null"},{"id":"e8ccfd8e-340e-4126-b363-2a88741ddd66","keyword":"null","originalKeyword":"null"}],"language":"en","publisherId":"1006-7191_1996_2_4","title":"MORPHOLOGY OF MELT SPINNING SUPERSATURATED B2 NiAl","volume":"9","year":"1996"},{"abstractinfo":"The orientation relationships among TiB (B27), B2, and Ti(3)Al phases have been investigated by transmission electron microscopy. By using the composite selected-area electron diffraction technique, the orientation relationship between TiB (B27) and B2 was determined to be [100](TiB)parallel to[00](B2), (001)(TiB)parallel to(010)(B2); and that between TiB (B27) and Ti(3)Al was [010](TiB)parallel to[1120](Ti3Al), (001)(TiB)parallel to(0001)(Ti3Al). These orientation relationships have been predicted precisely by the method of coincidence of reciprocal lattice points.","authors":[],"categoryName":"|","doi":"","fpage":"1688","id":"619ca348-8e4b-4705-b505-76a59a92734a","issue":"5","journal":{"abbrevTitle":"JOMR","id":"155c387a-c8cb-4083-85f3-6b58aeef4116","issnPpub":"0884-2914","publisherId":"JOMR","title":"Journal of Materials Research"},"keywords":[{"id":"b092547f-c9ac-48ce-8cbb-6077bbff122e","keyword":"tial-based alloys;grain-refinement;titanium aluminides;boron;addition;al;microstructure;intermetallics;evolution;system","originalKeyword":"tial-based alloys;grain-refinement;titanium aluminides;boron;addition;al;microstructure;intermetallics;evolution;system"}],"language":"en","publisherId":"0884-2914_2009_5_2","title":"Orientation relationships between TiB (B27), B2, and Ti(3)Al phases","volume":"24","year":"2009"},{"abstractinfo":"Complex structures can be regarded as bring derived from a few basic structures via the local twinning at the atomic level. Although quasicrystals and approximants are believed to be the B2 derivatives, the related B2 twinning mode is not known. This paper addresses this problem by analysing the twinning property of Al-Cu approximants in an Al3Cu4 sample. Such an analysis leads to the recognition of the B2 chemical-twinning mode as 180 degrees/[111]B-2, which is responsible for the pentagonal atomic configuration in the Al-Cu approximants as well as for the pseudofivefold B2 twinning observed on quasicrystal surfaces.","authors":[],"categoryName":"|","doi":"","fpage":"501","id":"603a0e1d-f375-44f5-ae58-8552de20d48b","issue":"3","journal":{"abbrevTitle":"PMAOCMSDAMP","id":"e62fc53d-c8fd-4637-86db-12a39c2dbf47","issnPpub":"0141-8610","publisherId":"PMAOCMSDAMP","title":"Philosophical Magazine a-Physics of Condensed Matter Structure Defects and Mechanical Properties"},"keywords":[{"id":"ac16edd5-7533-4dcf-95d4-0c22ca61f3cc","keyword":"quasi-crystals","originalKeyword":"quasi-crystals"}],"language":"en","publisherId":"0141-8610_1999_3_1","title":"Chemical-twinning mode of the B2 structure in relation to Al-Cu approximants","volume":"79","year":"1999"},{"abstractinfo":"B2相广泛存在于铁基、钴基和镍基合金中.B2相的析出对于合金组织和性能具有重要影响.本文指出了合理描述B2相的热力学模型,并就如何简单有效地描述多元合金系中的B2相,以及如何处理在此过程中可能出现的各种问题,进行了深入的探讨和研究.","authors":[{"authorName":"蒋敏","id":"882e1d64-a206-452d-b6d5-a711ffa586ca","originalAuthorName":"蒋敏"},{"authorName":"大沼郁雄","id":"345a1b0e-8abf-49fd-81e2-232ccf828392","originalAuthorName":"大沼郁雄"},{"authorName":"贝沼亮介","id":"91a91667-dc50-448a-a2a9-2194214d4027","originalAuthorName":"贝沼亮介"},{"authorName":"石田清仁","id":"69b111ca-ee9c-4538-92da-c6548d27cdad","originalAuthorName":"石田清仁"}],"doi":"10.3969/j.issn.1671-6620.2005.02.025","fpage":"148","id":"27de9b35-0a58-449a-9b81-0eb9f8596d86","issue":"2","journal":{"abbrevTitle":"CLYYJXB","coverImgSrc":"journal/img/cover/CLYYJXB.jpg","id":"17","issnPpub":"1671-6620","publisherId":"CLYYJXB","title":"材料与冶金学报"},"keywords":[{"id":"b2aec8da-e56b-49d2-a698-94e006ef0ac9","keyword":"多元系","originalKeyword":"多元系"},{"id":"89cc4109-aaf8-4987-8cd0-e1054b22f05a","keyword":"B2相","originalKeyword":"B2相"},{"id":"bb333cf1-261e-468d-a960-c69168bb7fc6","keyword":"热力学","originalKeyword":"热力学"}],"language":"zh","publisherId":"clyyjxb200502025","title":"多元系B2相的热力学描述","volume":"4","year":"2005"},{"abstractinfo":"The precipitation behavior of B2 particles and the distribution of W in a Ti-47Al-2W-0.5Si alloy were investigated using high-spatial resolution analytical electron microscopy (AEM) and high-resolution electron microscopy (HREM). The ledges at the alpha(2)/gamma interfaces were found to be enriched in W and therefore the preferable nucleation sites for the B2 precipitates. In the B2 phase, as high as one third of Al is substituted by W in comparison with the composition of the 7 phase. The segregation of W to the alpha(2)/gamma and B2/gamma interfaces was also detected. These results provide explanations for the previous observations that additions of tungsten are effective in promoting the creep resistance of TiAl alloys. (C) 2002 Published by Elsevier Science Ltd.","authors":[],"categoryName":"|","doi":"","fpage":"661","id":"f435a487-f3f7-49d6-9ef1-7f553565723e","issue":"7","journal":{"abbrevTitle":"I","id":"df3168b7-7d28-4fa0-892e-186eb4f3fef5","issnPpub":"0966-9795","publisherId":"I","title":"Intermetallics"},"keywords":[{"id":"4a166a68-1457-40e5-bcb4-24fa8b7ca5e0","keyword":"titanium aluminides, based on TiAl;precipitates;phase interfaces;site;occupany;electron microscopy, transmission;analytical electron-microscope;gamma-titanium aluminides;orientation;relationship;creep deformation;tial alloy;atomic-scale;segregation;microstructure;interfaces;resistance","originalKeyword":"titanium aluminides, based on TiAl;precipitates;phase interfaces;site;occupany;electron microscopy, transmission;analytical electron-microscope;gamma-titanium aluminides;orientation;relationship;creep deformation;tial alloy;atomic-scale;segregation;microstructure;interfaces;resistance"}],"language":"en","publisherId":"0966-9795_2002_7_1","title":"B2 precipitates and distribution of W in a Ti-47Al-2W-0.5Si alloy","volume":"10","year":"2002"},{"abstractinfo":"The Al3Cu4 alloy, with an ela ratio of 1.86 being close to ternary AI-Cu-TM (transition metal) quasicrystals, has been chosen for the search of AI-Cu approximants. Phase structures and compositions were studied using TEM, X-ray diffraction and EPMA techniques. Two new phases were found: face-centered orthorhombic oF-Al43.2Cu56.8 (a = 0.816(6), b = 1.414(9), c = 0.999(5) nm) and body-centered orthorhombic oI-Al41.3Cu58.7 (oI, a = 0.408(3), b = 0.707(4), c = 0.9995 nm). Their ela ratios are the same as that of the Al-Cu-Fe icosahedral quasicrystal. Both are B2 superstructures and their unit cell components can be expressed approximately as oF-Al(36)Cu(48)n square(12) and oI-Al(8)Cu(12)square(4) (square: vacancies). They both exist in twinning variants of the types 120 degrees/[001] and 180 degrees/[310]. Such twinning modes indicate that these orthorhombic phases are the decomposition products of a high-temperature parent phase epsilon 2-Al2Cu3, the atomic structure of which shows pentagonal atomic arrangements. Further analysis on the twinning modes of of and oI leads to the recognition of the chemical-twinning mode of the basic B2 structure as 180 degrees/[111](B2) This kind of chemical twinning mode is responsible for the pentagonal atomic configuration in the AI-Cu approximants as well as for the pseudo-5-fold B2 twinning. (C) 2000 Elsevier Science Ltd. All rights reserved.","authors":[],"categoryName":"|","doi":"","fpage":"507","id":"6df58b86-b3f1-4bc8-8271-dd4c1e396ac4","issue":"5","journal":{"abbrevTitle":"M","id":"c714d10a-8910-4507-b2d7-66bef7c2ac5a","issnPpub":"0968-4328","publisherId":"M","title":"Micron"},"keywords":[{"id":"ac25a9d6-a72f-499d-849b-d82df3d2c049","keyword":"Al-Cu system;quasicrystals;approximants;chemical twinning;electron;microscopy;quasi-crystals;system","originalKeyword":"Al-Cu system;quasicrystals;approximants;chemical twinning;electron;microscopy;quasi-crystals;system"}],"language":"en","publisherId":"0968-4328_2000_5_1","title":"Al-Cu approximants and associated B2 chemical-twinning modes","volume":"31","year":"2000"},{"abstractinfo":"采用热处理和包套锻复合热机械处理两种路线对Ti-Al-Nb-W-B合金铸态组织进行了优化,观察在各种制度下((B2)相的组织演变,对照Ti-Al-Nb三元相图对合金组织形貌演变及生长机理进行了研究,确定了消除室温TiAl基合金中晶界块状((B2)相的基本工艺.实验结果表明:(1)采用在α+γ两相区的热处理工艺可以有效地消除Ti-Al-Nb-W-B合金铸态组织中的((B2)相:在1220 ℃保温36 h随炉冷却,可以明显地减少并基本消除((B2)相,晶粒尺寸略微长大;提高热处理的温度至1260 ℃,可以极大的缩短保温时间,也能达到消除((B2)相的效果,同时还能避免晶粒尺寸的长大.(2)通过总变形量大于80%的包套锻复合热机械处理,铸态组织晶界处的块状((B2)相基本被破碎和消除,同时原始铸态的层片状组织也被明显优化为均匀的双态组织.","authors":[{"authorName":"张伟","id":"2a1ee6ca-21bc-4d6b-9fca-e045e0d03dc0","originalAuthorName":"张伟"},{"authorName":"刘咏","id":"0059516d-2873-4346-8cd7-873453054673","originalAuthorName":"刘咏"},{"authorName":"黄劲松","id":"048c8458-eb94-42a9-9909-035fa945c762","originalAuthorName":"黄劲松"},{"authorName":"刘彬","id":"4748abdb-e250-43ce-974f-0cc96d5e2466","originalAuthorName":"刘彬"},{"authorName":"贺跃辉","id":"6f0bc831-215b-41ed-93c7-76c8c821f218","originalAuthorName":"贺跃辉"},{"authorName":"黄伯云","id":"1c919c0a-ee89-4582-9f8a-e30161a29e96","originalAuthorName":"黄伯云"}],"doi":"","fpage":"1711","id":"bd066bcd-a0ec-4404-9a14-6baf86bb3ec5","issue":"10","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"19504c98-72cb-4ac7-9167-72ba0cbe293e","keyword":"TiAl合金","originalKeyword":"TiAl合金"},{"id":"30c56582-9fa6-4a2b-b41f-1000c6fe87b1","keyword":"β(B2)相","originalKeyword":"β(B2)相"},{"id":"0dcd367b-876d-4031-abc1-3258535b1ff0","keyword":"显微组织","originalKeyword":"显微组织"},{"id":"c385b742-8000-48d9-a1b1-66af7b85c694","keyword":"热处理","originalKeyword":"热处理"},{"id":"7fac5daa-cb59-4de8-9c3f-67dd9578a27e","keyword":"包套锻","originalKeyword":"包套锻"},{"id":"e9bd7303-ca91-4674-992f-c0cb168ac323","keyword":"热机械处理","originalKeyword":"热机械处理"}],"language":"zh","publisherId":"xyjsclygc200910005","title":"Ti-Al-Nb-W-B合金铸态组织的优化及β(B2)相的消除","volume":"38","year":"2009"}],"totalpage":8540,"totalrecord":85395}