| 奥氏体不锈钢1Cr18Ni9Ti激光冲击强化研究 |
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| 引用本文： | 李晓轩,孙锡军,王华明,邹世坤,王健.奥氏体不锈钢1Cr18Ni9Ti激光冲击强化研究[J].宇航材料工艺,1999,29(4):16-19. |
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| 作者姓名： | 李晓轩 孙锡军 王华明 邹世坤 王健 |
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| 作者单位： | 1. 北京航空航天大学,北京,100083
2. 北京航空工艺研究所,北京,100024 |
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| 摘 要： | 对奥氏体不锈钢１Ｃｒ１８Ｎｉ９Ｔｉ进行激光冲击强化，观察了激光冲击强化层显微组织与结构的变化并测定了激光冲击强化层内的显微硬度和残余应力。结果表明：１Ｃｒ１８Ｎｉ９Ｔｉ激光冲击强化层中有高密度的位错和大量的孪晶，显微硬度显著提高并产生较高的残余压应力，１Ｃｒ１８Ｎｉ９Ｔｉ激光冲击强化区还发生了形变诱发马氏体相变。
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| 关 键 词： | 激光冲击强化 奥氏体 不锈钢 显微组织 硬度 |
Laser Shock Processing of Austenitic Stainless Steel 1Cr18Ni9Ti |
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| Li Xiaoxuan,Sun Xijun,Wang Huaming,Zhou Shikun,Wang Jian.Laser Shock Processing of Austenitic Stainless Steel 1Cr18Ni9Ti[J].Aerospace Materials & Technology,1999,29(4):16-19. |
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| Authors: | Li Xiaoxuan Sun Xijun Wang Huaming Zhou Shikun Wang Jian |
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| Institution: | Li Xiaoxuan Sun Xijun Wang Huaming ( Beijing University of Aeronautics and Astronautics Beijing 100083 ) Zhou Shikun Wang Jian ( Aeronautical Manufacturing Technology Research Institute Beijing 100024 ) |
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| Abstract: | Austenitic stainless steel 1Cr18Ni9Ti was shock processed by high intensity pulse laser irradiation.Microstructure of the laser shock processed surface was characterized and micro hardness and residual stress were measured.Test results show that there are high densities of dislocations and twins in the laser shock processed zone, resulting in formation of compressive residual stress and enhancement of hardness in this area. Strain induced martensite was also observed in the laser shock processed 1Cr18Ni9Ti surface. |
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| Keywords: | Laser shock processing Austenitic stainless steel Microstructure Micro hardness Residual stress |
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