| 0Cr18Ni9不锈钢搅拌摩擦焊接头的微观组织和性能 |
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| 引用本文： | 王希靖,叶结和,孙丙岩,王丽. 0Cr18Ni9不锈钢搅拌摩擦焊接头的微观组织和性能[J]. 热加工工艺, 2006, 0(6) |
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| 作者姓名： | 王希靖 叶结和 孙丙岩 王丽 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料国家重点实验室，兰州理工大学甘肃省有色金属新材料国家重点实验室，兰州理工大学甘肃省有色金属新材料国家重点实验室，兰州理工大学甘肃省有色金属新材料国家重点实验室 甘肃兰州730050，甘肃兰州730050 中国南车集团四方机车车辆股份有限公司，山东青岛266031，甘肃兰州730050，甘肃兰州730050 |
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| 摘 要： | 采用搅拌摩擦焊工艺对3mm厚0Cr18Ni9不锈钢板进行了对接焊接。焊接接头内形成了焊核区、热力影响区和热影响区三个区域。焊核区由动态再结晶组织构成;热力影响区内的组织发生了不同程度的变形;热影响区由不完全再结晶组织构成。焊核区发生了明显的加工硬化现象,其显微硬度(HV)与母材相比提高了22%。在搅拌头旋转速度600r/min、焊接速度70mm/min下,接头的拉伸强度最高,达到412MPa。
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| 关 键 词： | 搅拌摩擦焊 0Cr18Ni9不锈钢 接头组织 力学性能 |
Microstructure and Mechanical Properties of Friction Stir Weld Joint of 0Cr18Ni9 Stainless Steel |
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| WANG Xi-jing,YE Jie-he,,SUN Bing-yan,WANG Li. Microstructure and Mechanical Properties of Friction Stir Weld Joint of 0Cr18Ni9 Stainless Steel[J]. Hot Working Technology, 2006, 0(6) |
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| Authors: | WANG Xi-jing YE Jie-he SUN Bing-yan WANG Li |
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| Affiliation: | WANG Xi-jing1,YE Jie-he1,2,SUN Bing-yan1,WANG Li1 |
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| Abstract: | The 0Cr18Ni9 stainless steel sheet of 3mm thickness was welded by fiction stir weld (FSW) process.The joint microstructures can be divided into three regions,welded nugget zone (WNZ) , thermal-mechanically affected zone (TMAZ) and heat affected zone(HAZ). And the microstructure in the WNZ consists of dynamic recrystallization grains,the obvious working-hard phenomenon occurs,the microhardness(HV) is higher 22% than that of basic meterial;the microstructure in the TMAZ has a different extent of distortion; the microstructure in the HAZ consists of incomplete dynamic recrystallzation grains.The tensile strength of weld joint is highest under the condition of the stir-pin rotation speed 600r/min and the weld speed 700mm/min,which reaches 412MPa. |
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| Keywords: | FSW 0Cr18Ni9 stainless steel joint microstructures mechanical property |
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