• 首页 | 期刊简介 | 编委会 | 投稿须知 | 下载专区 | 联系我们 | English
戴雨华,刘行健,李中伟*,文世峰,赵玉津,史玉升.选择性激光熔化316L不锈钢在不同成形策略下的冲击性能研究[J].实验力学,2018,33(4):543~550
选择性激光熔化316L不锈钢在不同成形策略下的冲击性能研究
Experimental investigation on the impact properties of 316L stainless steel specimens made by different selective laser melting forming patterns
投稿时间: 2017-03-06  最后修改时间: 2017-04-10
DOI:10.7520/1001-4888-17-048
中文关键词:  选择性激光熔化成形  316L不锈钢  冲击性能
英文关键词:selective laser melting forming (SLM)  316L stainless steel  impact property
基金项目:国家自然科学基金(51675208)资助
作者单位
戴雨华 华中科技大学 材料科学与工程学院 武汉 430074 
刘行健 华中科技大学 材料科学与工程学院 武汉 430074 
李中伟* 华中科技大学 材料科学与工程学院 武汉 430074 
文世峰 华中科技大学 材料科学与工程学院 武汉 430074 
赵玉津 南卡罗莱纳大学 机械工程系 哥伦比亚 美国 29208 
史玉升 华中科技大学 材料科学与工程学院 武汉 430074 
摘要点击次数: 34
全文下载次数: 
中文摘要:
      采用选择性激光熔化(SLM)成形系统HK M250制备了垂直于Z轴的水平类型和平行于Z轴的垂直类型等多种工况的316L不锈钢冲击试样,并对试样缺口采取了SLM直接成形和机械加工成形两种方式。在室温条件下进行了316L不锈钢冲击实验,使用KEYENCE光学成像系统和扫描电镜观察了试样断口形貌,并用扫描电镜观察了不同成形截面的微观组织。实验结果表明,通过机械加工制作缺口相比于SLM直接成形缺口,其试样冲击性能更好;对于两种缺口制作方式,T(t)类型试样的冲击功明显低于H(h)类型试样,这主要是由于T(t)类型试样承载截面的内部缺陷多于H(h)类型试样,从而降低了其冲击功。
英文摘要:
      Both types of 316L stainless steel impact specimens were manufactured by selective laser melting (SLM) forming based on HK M250, forming system, including horizontal type that is perpendicular to the Z axis and vertical type that is parallel to the z axis. In addition, two patterns of sample notch forming were adopted: one is direct SLM forming and the other one is machining operation. The impact experiment of 316L stainless steel specimens was carried out at room temperature. In experiment, the fracture morphology of specimen was observed by KEYENCE optical imaging system and scanning electron microscope, and the microstructure of different forming sections was observed by scanning electron microscope. Experimental results show that the impact properties of specimen made by machining operation are better than that of specimen made by SLM direct forming. For two types of notch, the impact work of vertical type specimen is obviously lower than that of horizontal type sample, which is mainly due to the internal defects of vertical type specimen are more than those of the horizontal type, then reduce the impact work.
查看全文  查看/发表评论  下载PDF阅读器
关闭

版权所有:《实验力学》编辑部
您是本站第 1575652 位访问者,今日一共访问88次,当前在线人数: 68
技术支持:本系统由北京勤云科技发展有限公司设计