激光选区熔化成型15-5PH不锈钢动态力学性能研究  

Study on Dynamic Mechanical Properties of 15-5PH StainlessSteel Formed by Selective Laser Melting

作　　者：胡志明 姚文进[1] 于良 HU Zhiming;YAO Wenjin;YU Liang(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Shandong Special Industry Group Co. Ltd.,Zibo 255200,China)

机构地区：[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

出　　处：《弹道学报》2021年第4期77-82,共6页Journal of Ballistics

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1418 MPa和1295 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。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 1418 MPa and 1295 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.

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 

分 类 号：TJ303.4[兵器科学与技术—火炮、自动武器与弹药工程]