| 时效处理对15-5PH沉淀硬化马氏体不锈钢组织和力学性能的影响 |
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| 引用本文： | 裴海祥,王西涛,王立新,邢丽娜.时效处理对15-5PH沉淀硬化马氏体不锈钢组织和力学性能的影响[J].特殊钢,2012,33(5):47-48. |
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| 作者姓名： | 裴海祥 王西涛 王立新 邢丽娜 |
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| 作者单位： | 1北京科技大学新金属材料国家重点实验室，北京100083；
2太钢不锈钢股份有限公司技术中心，太原030003 |
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| 摘 要： | 研究了1000℃和1040℃30min水冷固溶480～620℃4 h时效对15-5PH钢(/%:0.065C、0.46Si、0.58Mn、0.022P、0.004S、14.77Cr、5.19Ni、2.91 Cu、0.22Nb)组织和力学性能的影响。结果表明,该钢在480℃4 h时效后,开始析出富铜相和碳化物Nb(C,N),随时效温度升高,部分析出相长大;550℃时效15-5PH钢具有最佳综合力学性能:屈服强度Rp0.2530～625 MPa,抗拉强度Rm1050～1070 MPa,冲击功值akv113～115 J/cm2。
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| 关 键 词： | 15-5PH沉淀硬化马氏体不锈钢 时效 力学性能 |
| 收稿时间： | 2012-03-09 |
Effect of Ageing Treatment on Structure and Mechanical Properties of Precipitation-Hardening Martensite Stainless Steel 15-5PH |
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| Pei Haixiang
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Wang Xitao
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Wang Lixin
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Xing Lina.Effect of Ageing Treatment on Structure and Mechanical Properties of Precipitation-Hardening Martensite Stainless Steel 15-5PH[J].Special Steel,2012,33(5):47-48. |
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| Authors: | Pei Haixiang Wang Xitao Wang Lixin Xing Lina |
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| Affiliation: | 1 State Key Laboratory for Advanced Metals and Materials, University of Science and Technology, Beijing 100083 ；
2 Technology Center, Stainless Steel, Co Ltd, Taiyuan Iron and Steel Co, Taiyuan 030003 |
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| Abstract: | Effect of ageing treatment at 480～620℃for 4 h on structure and mechanical properties of steel 15-5PH （/%:0.065C,0.46Si,0.58Mn,0.022P,0.004S,14.77Cr,5.19Ni,2.91 Cu,0.22Nb） solid-solution-treated at 1 000℃and 1 040℃for 30 min water cooling has been studied.Results show that with ageing at 480℃for 4 h,the copperrich phases and carbide Nb（C,IN） begin to precipitate,and with increasing ageing temperature,partial precipitates coarsen; with ageing at 550℃the steel 15-5PH has optimum comprehensive mechanical properties i.e.yield strength Rp0.2, 530～625 MPa,tensile strength RⅢ1 050～1 070 MPa and impact energy value akv 113～115 J/cm2. |
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| Keywords: | Precipitation-Hardening Martensite Stainless Steel 15-5PH Ageing Mechanical Properties |
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