在NiTi合金中添加少量Al、Nb、Hf强化元素,采用定向凝固原位自生法制备了一种NiTi基自生复合材料,并在950℃对定向凝固棒分别进行了12h、50h及100 h的均匀化热处理,对热处理后的试样进行了室温抗拉强度测试.结果表明,定向凝固组织为沿[001]方向生长的细小的棒状胞晶组织,β-Nb相和Ti2 Ni相增强体颗粒沿NiTi胞晶间的[001]方向排列.随热处理时间的延长,胞晶尺寸逐渐粗化,两增强相粒子分布更加弥散均匀.热处理后NiTi基自生复合材料的最大抗拉强度达到1972MPa,超过了4130和8640超高强度钢,与4140和4340超高强度钢的强度基本相当,达到或超过了多种国内外现役的超高强度钛合金.
参考文献
| [1] | 王志云.热处理对7A04超高强铝合金强度和断裂韧性的影响[D].南宁:广西大学,2006:6.Wang Zhiyun.Effect of heat treatments on the intensity and fracture toughness of 7A04 ultra-high strength aluminum alloys[D].Nanning:Guangxi University,2006:6. |
| [2] | 商国强,朱知寿,常辉,等.超高强度钛合金研究进展[J].稀有金属,2011,35(2):286-291.Shang Guoqiang, Zhu Zhishou, Chang Hui, et al.Development of ultra-high strength titanium alloy[J].Chinese Journal of Rare Metals,2011,35(2):286-291. |
| [3] | 孙强,周重光,袁书强,等.超高强度钢研究进展及其在军事上的应用[J].材料导报网刊,2006,1(3):14-16.Sun Qiang, Zhou Chongguang, Yuan Shuqiang, et al.Research progress in ultrahigh-strength steel and its application in military affairs[J].Materials Review,2006,1(3) : 14-16. |
| [4] | 李杰,李志,颜鸣皋.高合金超高强度钢的发展[J].材料工程,2007(4):61-65.Li Jie,Li Zhi,Yan Minggao.Development of high-alloy ultrahigh strength steel[J].Journal of Materials Engineering,2007(4):61-65. |
| [5] | Kimurat Yoshisato,Pope David P.Ductility and toughness in intermetallics[J].Intermetallics,1998,6(7/8):567-571. |
| [6] | Dobes Ferdinand,Mili(c)ka Karel.Estimation of ductility of Fe-Al alloys by means of small punch test[J].Intermetallics,2010,18(7):1357-1359. |
| [7] | Huai K W, Guo J T, Gao Q, Li H T, Yang R.Microstructure and mechanical behavior of NiAl-based alloy prepared by powder metallurgical route[J]. Intermetallics,2007,15(5/6):749-752. |
| [8] | 刘晓山,何国求,陈成澍,胡魏.TiNiAl合金形状记忆及超弹性效应研究[J].功能材料,2006,37(6):912-914.Liu Xiaoshan,He Guoqiu,Chen Chengshu,Hu Wei. The research of shape memory effect and superelasticity of TiNiAl alloy[J].Journal of Functional Materials,2006,37(6):912-914. |
| [9] | 王乐酉,朱明,毛协民,李重河,范荣辉.TiNi单晶形状记忆合金制备及组织和性能研究[J].稀有金属,2008,32(3):279-283.Wang Leyou,Zhu Ming,Mao Xiemin,Li Chonghe,Fan Ronghui.Single crystal of TiNi shape memory alloy and its microstructures and properties[J].Chinese Journal of Rare Metals,2008,32(3):279-283. |
| [10] | 张花蕊,高明,唐晓霞,张虎.定向凝固过程中Ti-47Al-2Cr-Nb合金与Y2O3陶瓷的相互作用[J].金属学报,2010,46(7):890.Zhang Huarui, Gao Ming, Tang Xiaoxia, Zhang Hu.Interaction between Ti-47Al-2Cr-2Nb alloy and Y2O3 ceramic during directional solidification[J].Acta Metallurgica Sinica,2010,46(7):890. |
| [11] | Xu Jian,Zhao Xinqing,Gong Shengkai.The influence of Nb diffusion on the oxidation behavior of TiNiAlNb alloys with different Ti/Ni ratio[J].Materials Science and Engineering A,2007,458(1/2):381-384. |
| [12] | Xiao Fu,Ma Guojun,Zhao Xinqing,Xu Huibin.Effects of Nb content on yield strength of NiTiNb alloys in martensite state [J]. Chinese Journal of Aeronautics, 2009, 22(6):658-662. |
| [13] | He X M,Rong L J,Yan D S,Li Y Y. TiNiNb wide hysteresis shape memory alloy with low niobium content[J].Materials Science and Engineering A,2004,371(1/2):193-197. |
| [14] | Piao M,Otsuka K,Miyazaki S,Horidawa H.Effects of Nb addition on the microstructure of Ti-Ni alloys[J].Materials Transactions,1992,33(4):337-345. |
| [15] | Otsuka Kazuhiro,Ren Xiaobing.Recent developments in the research of shape memory alloys[J].Intermetallics,1999,7(5):512-518. |
| [16] | 孟令杰,李岩,赵新青,徐惠彬.Nb对富钛TiNiAl金属间化合物强化机制的影响[J].航空学报,2007,28(4):1-4.Meng Lingjie,Li Yan,Zhao Xinqing,Xu Huibin.Effect of Nb on strengthening mechanism of Ti-rich TiNiAl intermetallics[J].Acta Aeronautica et Astronautica Sinica,2007,28(4):1-4. |
| [17] | 范长刚,董瀚,雍岐龙,等.低合金超高强度钢的研究进展[J].机械工程材料,2006,30(8):1-4.Fan Changgang,Dong Han,Yong Qilong,et al.Research development of ultra-high strength low alloy steels[J].Materials for Mechanical Engineering,2006,30(8):1-4. |
| [18] | Bozzolo Guillermo,Noebe Ronald D,Mosca Hugo O. Site preference of ternary alloying additions to NiTi:Fe,Pt,Pd,Au, Al, Cu, Zr and Hf[J]. Journal of Alloys and Compounds,2005,389(1/2):80-94. |
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