采用夏比摆锤冲击试验对同种焊接及焊后热处理工艺条件下的F92/F22异种钢焊接接头焊缝冲击性能进行了研究.结果显示,1号试样的冲击吸收能量(63 J)不足相同工艺条件下2号试样冲击能量(130 J)的1/2.通过扫描电子显微镜(SEM)和能谱(EDS)分析了冲击断口的形貌特征和微区成分,发现在1号试样冲击断口的裂纹形成区存在大小约25 μm的复合氧化物夹杂.采用有效投影面积模型计算引发裂纹萌生的临界夹杂物尺寸,分析了夹杂物对F92/F22异种钢焊接接头冲击性能的影响,并确定了该夹杂是造成1号试样冲击吸收能量显著下降的主要原因.因此,应采取适当的工艺措施减少其内部的缺陷,以提高该异种钢焊接接头的冲击性能.
参考文献
| [1] | P.J.Ennis;A.Zielinska-lipiec;O.Wachter.Microstructural stability and creep rupture strength of the martensitic steel P92 for advanced power plant[J].Acta Materialia,199712(12):49014907-0. |
| [2] | Xiaoyu Liu;Zongguo Wen.Best available techniques and pollution control: a case study on China's thermal power industry[J].Journal of cleaner production,20121(1):113-121. |
| [3] | Wojciech Kosman;Maciej Roskosz;Krzysztof Nawrat.Thermal elongations in steam turbines with welded rotors made of advanced materials at supercritical steam parameters[J].Applied thermal engineering: Design, processes, equipment, economics,200916(16):3386-3393. |
| [4] | Wojciech Kosman.Thermal analysis of cooled supercritical steam turbine components[J].Energy,20102(2):1181. |
| [5] | A. Rusin;G. Nowak;W. Piecha.Shrink connection modelling of the steam turbine rotor[J].Engineering failure analysis,2013:217-227. |
| [6] | Yong-Jian Sun;Xiao-Qiang Liu;Li-Sheng Hu;Xue-Yan Tang.Online life estimation for steam turbine rotor[J].Journal of loss prevention in the process industries,20131(1):272-279. |
| [7] | M. Nie;J. Zhang;F. Huang.Microstructure evolution and life assessment of T92 steel during long-term creep[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2014:348-356. |
| [8] | Wenhao Huo;Jun Li;Xin Yan.Effects of coolant flow rates on cooling performance of the intermediate pressure stages for an ultra-supercritical steam turbine[J].Applied thermal engineering: Design, processes, equipment, economics,20142(2):723-731. |
| [9] | 朱明亮;轩福贞;梅林波;王思玉.汽轮机高、低压一体化转子材料及性能的研究进展[J].动力工程,2008(5):664-671,711. |
| [10] | Peng Liu;Fenggui Lu;Xia Liu.Study on fatigue property and microstructure characteristics of welded nuclear power rotor with heavy section[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2014:430-437. |
| [11] | 刘鹏;芦凤桂;刘霞;高玉来.高温条件下NiCrMoV转子钢焊接接头的高周疲劳性能研究[J].上海金属,2013(3):31-35,39. |
| [12] | Hongkong Wang;Hanqian Zhang;Jinfu Li.Microstructural evolution of 9Cr-1Mo deposited metal subjected to weld heating[J].Journal of Materials Processing Technology,20096(6):2803-2811. |
| [13] | 赵杰;曹喜彪;张敏红;范金辉;华勤;邵光杰.铸造缺陷对A356铝合金缸盖疲劳性能的影响[J].上海金属,2015(5):6-10. |
| [14] | 周玉华 .51CrV4弹簧钢中的夹杂物对其性能的影响[D].南京理工大学,2010. |
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