论文摘要
采用激光选区熔化(SLM)技术分别成形注塑模具钢AISI420和S136,对两种模具钢的相组成、微观组织、显微硬度、抗拉强度和摩擦磨损性能等进行了研究。结果表明,SLM成形的AISI420具有更高的合金元素固溶度,合金固溶强化使得AISI420比S136具有更高的强度和伸长率,其强度和伸长率分别为1 234.13MPa、14.63%和642.89MPa、9.76%;由于S136中的C含量较高,在激光的快速冷却作用下,S136比AISI420更易产生马氏体组织,因此拥有更高的硬度和较低的磨损率,二者硬度(HV3)和磨损率分别为589、3.28×10-6mm3·N-1·m-1,493.78、4.12×10-6mm3·N-1·m-1。
论文目录
文章来源
类型: 期刊论文
作者: 朱学超,文世峰,魏青松
关键词: 激光选区熔化,注塑模具钢,组织与性能
来源: 特种铸造及有色合金 2019年05期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 金属学及金属工艺
单位: 苏州市职业大学机电工程学院,华中科技大学材料成形与模具技术国家重点实验室
基金: 国家自然科学基金资助项目(51605176,51375189),国家高技术研究发展计划(863计划)资助项目(2015AA042501),湖北省科技支撑计划资助项目(2014BAA017)
分类号: TG142.1
DOI: 10.15980/j.tzzz.2019.05.012
页码: 506-510
总页数: 5
文件大小: 5184K
下载量: 126
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