Microstructure and Hardness of Plasma Arc Welded Joint of C300 Maraging Steel
摘 要
采用穿孔型等离子弧(K-PAW)焊接方法对固溶态C300马氏体时效钢进行焊接, 并采用光学显微镜、透射电子显微镜、扫描电子显微镜以及硬度仪等对焊接接头进行了组织观察和硬度分析。结果表明: 采用K-PAW焊接可得到成形良好的焊接接头, 但为了避免局部凹陷现象, 应适当采用填充金属; 焊接接头具有高度对称性, 可分为焊缝区、固溶区(粗晶区和细晶区)、时效区以及母材区; 焊缝金属呈倒喇叭状形貌; 接头的硬度峰值出现在时效区, 硬度曲线上水平区域的宽度取决于焊缝区与固溶区的宽度; 焊缝、固溶区与母材的硬度基本相同; 在时效区发现皲裂形貌和镍、钼、钛和钴元素含量的差异。
Abstract
Keyhole plasma arc welding (K-PAW) was used to weld C300 maraging steel in solid-solution state, the microstructure observing and hardness analysis were carried out by optical microscopy transmission electron microscopy, scanning electron microscopy and hardness testing. The results indicate that, in order to avoid local concave it should be appropriate to consider using filler metal during welding C300 maraging steel by means of K-PAW, although good welded joint could be obtained without it. The welded joint with high symmetry could be divided into weld seam zone, solid-solution zone (including coarse grain zone and fine grain region), aging zone and base metal zone. Weld metal showed inverted horn morphology. The hardness peak of the joint was in the aging area, the width of the horizontal area of hardness curve was dependent on the width of the weld seam zone and solid-solution zone.The hardnesses of weld seam zone, solid-solution zone and base metal were the same. Crack morphology and huge difference composition contents of Ni, Mo, Ti and Co were found in aging zone.
中图分类号 TG42
所属栏目 试验研究
基金项目 国家重点基础研究发展计划(“973”计划)项目(2010CB630800)
收稿日期 2013/6/22
修改稿日期 2014/6/18
网络出版日期
作者单位点击查看
备注杨帅(1983-), 男, 河南郑州人, 博士研究生。
引用该论文: YANG Shuai,PENG Yun,ZHANG Xiao-mu,PENG Zhan-nan,TIAN Zhi-ling. Microstructure and Hardness of Plasma Arc Welded Joint of C300 Maraging Steel[J]. Materials for mechancial engineering, 2014, 38(10): 1~5
杨帅,彭云,张晓牧,彭展南,田志凌. C300马氏体时效钢等离子弧焊接接头的组织与硬度[J]. 机械工程材料, 2014, 38(10): 1~5
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】HALL M, SLUNDER C J. The metalllurgy, behavior, and application of the 18% Ni maraging steels[M].Washington, DC: National Aeronautics and Space Administration, 1968: 69-80.
【2】LANG F H, KENYON N. Welding of maraging steels[M].[S.l.]: Welding Research Council, 1971.
【3】蔡其巩, 朱静, 何崇智.马氏体时效钢的时效结构[J].物理学报, 1974, 23(3): 178-193.
【4】徐玉松, 李国一, 张伟, 等.微量元素对18Ni马氏体时效钢显微组织和力学性能的影响[J].机械工程材料, 2011, 35(3): 32-35.
【5】ZHU F, YIN Y F, FAULKNER R G. Microstructural control of maraging steel C300 [J].Materials Science and Technology, 2011, 27(1): 395-405.
【6】SHAMANTHA C R, NARAYANAN R, IYER K J L, et al. Microstructural changes during welding and subsequent heat treatment of 18Ni (250-grade) maraging steel[J]. Materials Science and Engineering: A, 2000, 287(1): 43-51.
【7】TARIQ F, BALOCH R A, AHMED B, et al. Investigation into microstructures of maraging steel 250 weldments and effect of post-weld heat treatments[J].Journal of Materials Engineering and Performance, 2010, 19(2): 264-273.
【8】胡庆贤.穿孔等离子弧焊接温度场的有限元分析[D].济南: 山东大学, 2007: 86-87.
【9】徐洲, 赵连城.金属固态相变原理[M].北京: 科学出版社, 2004: 55.
【10】余永宁.金属学原理[M].北京: 冶金工业出版社, 2007: 241-245.
【11】SANATKUMAR B S, NAYAK J, SHETTY A N. Influence of 2-(4-chlorophenyl)-2-oxoethyl benzoate on the hydrogen evolution and corrosion inhibition of 18 Ni 250 grade weld aged maraging steel in 1.0 M sulfuric acid medium[J].International Journal of Hydrogen Energy, 2012, 37(11): 9431-9442.
【12】张文钺. 焊接冶金学[M].北京: 机械工业出版社, 1999: 194.
【2】LANG F H, KENYON N. Welding of maraging steels[M].[S.l.]: Welding Research Council, 1971.
【3】蔡其巩, 朱静, 何崇智.马氏体时效钢的时效结构[J].物理学报, 1974, 23(3): 178-193.
【4】徐玉松, 李国一, 张伟, 等.微量元素对18Ni马氏体时效钢显微组织和力学性能的影响[J].机械工程材料, 2011, 35(3): 32-35.
【5】ZHU F, YIN Y F, FAULKNER R G. Microstructural control of maraging steel C300 [J].Materials Science and Technology, 2011, 27(1): 395-405.
【6】SHAMANTHA C R, NARAYANAN R, IYER K J L, et al. Microstructural changes during welding and subsequent heat treatment of 18Ni (250-grade) maraging steel[J]. Materials Science and Engineering: A, 2000, 287(1): 43-51.
【7】TARIQ F, BALOCH R A, AHMED B, et al. Investigation into microstructures of maraging steel 250 weldments and effect of post-weld heat treatments[J].Journal of Materials Engineering and Performance, 2010, 19(2): 264-273.
【8】胡庆贤.穿孔等离子弧焊接温度场的有限元分析[D].济南: 山东大学, 2007: 86-87.
【9】徐洲, 赵连城.金属固态相变原理[M].北京: 科学出版社, 2004: 55.
【10】余永宁.金属学原理[M].北京: 冶金工业出版社, 2007: 241-245.
【11】SANATKUMAR B S, NAYAK J, SHETTY A N. Influence of 2-(4-chlorophenyl)-2-oxoethyl benzoate on the hydrogen evolution and corrosion inhibition of 18 Ni 250 grade weld aged maraging steel in 1.0 M sulfuric acid medium[J].International Journal of Hydrogen Energy, 2012, 37(11): 9431-9442.
【12】张文钺. 焊接冶金学[M].北京: 机械工业出版社, 1999: 194.
相关信息