| 激光选区熔化成型15-5PH不锈钢动态力学性能研究 |
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| 引用本文： | 胡志明,姚文进,于良.激光选区熔化成型15-5PH不锈钢动态力学性能研究[J].弹道学报,2021,33(4):77-82. |
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| 作者姓名： | 胡志明 姚文进 于良 |
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| 作者单位： | 1.南京理工大学 机械工程学院,江苏 南京 210094; 2.山东特种工业集团有限公司,山东 淄博 255200 |
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| 摘 要： | 为了研究激光选区熔化(SLM)成型15-5PH不锈钢的动态力学性能,对SLM成型15-5PH不锈钢试件开展动、静态压缩力学试验,获取力学性能参数,拟合其动态本构模型,并与锻造15-5PH不锈钢进行对比。结果表明:SLM和锻造15-5PH不锈钢准静态屈服强度分别为1 418 MPa和1 295 MPa,SLM成型15-5PH不锈钢提高了9.5%,并且加工硬化更显著; SLM成型工艺有助于15-5PH钢抵抗温度软化效应,提高动态屈服强度峰值; SLM技术应用于15-5PH不锈钢具备可行性。
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| 关 键 词： | 侵彻弹 激光选区熔化 15-5PH不锈钢 动态力学性能 本构方程 |
Study on Dynamic Mechanical Properties of 15-5PH Stainless Steel Formed by Selective Laser Melting |
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| HU Zhiming,YAO Wenjin,YU Liang.Study on Dynamic Mechanical Properties of 15-5PH Stainless Steel Formed by Selective Laser Melting[J].Journal of Ballistics,2021,33(4):77-82. |
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| Authors: | HU Zhiming YAO Wenjin YU Liang |
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| Affiliation: | 1.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China; 2.Shandong Special Industry Group Co. Ltd.,Zibo 255200,China |
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| Abstract: | In order to study the dynamic mechanical properties of 15-5PH stainless steel formed by selective laser melting(SLM),the dynamic and static compression mechanical tests on 15-5PH stainless steel formed by SLM were carried out. The mechanical properties parameters were obtained and compared with that of forged 15-5PH stainless steel. Then,the dynamic constitutive model was filted. The results show that the quasi-static yield strength of SLM and forged 15-5PH stainless steel are 1 418 MPa and 1 295 MPa respectively. The quasi-static yield strength of SLM formed 15-5PH stainless steel increases by 9.5%,and work hardening is more significant. SLM process is helpful to resist the temperature softening effect and increase the peak value of dynamic yield strength of 15-5PH steel. It is feasible to apply SLM technology to 15-5PH stainless steel. |
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| Keywords: | penetrator selective laser melting 15-5PH stainless steel dynamic mechanical properties constitutive model |
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