当前位置：首页 > 过刊浏览->2019年40卷第7期
HDDR-热压烧结制备纳米晶纯镁及其力学行为研究
Study on Mechanical Behavior of Nanocrystalline Pure Magnesium Prepared by HDDR and Hot-pressing Sintering
浏览(1857) 下载(5)
- DOI:
- 作者:
- 高静 樊建锋 郭卉君 田笑颖
GAO Jing;FAN Jianfeng;GUO Huijun;TIAN Xiaoying
- 作者单位:
- 太原理工大学新材料界面科学与工程教育部重点实验室 太原理工大学先进镁基材料山西省重点实验室 太原理工大学材料科学与工程学院
Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education,Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Key Laboratory of Advanced Magnesium Based Materials, Taiyuan University of Technology, Taiyuan 030024, China;School of Materials Science and Engineering, Taiyuan University of Technology,Taiyuan 030024, China
- 关键词:
- 纳米晶纯镁 氢化脱氢 热压烧结 力学性能
nanocrystalline pure magnesium HDDR hot press sintering mechanical properties
- 摘要:
- 在纯镁粉经过氢化脱氢(HDDR)后得到纳米晶纯镁粉的基础上,采用正交试验方案探索了最佳的热压烧结工艺参数,结合热挤压工艺获得了平均晶粒尺寸为15 nm均匀致密的大尺寸纳米晶纯镁块体与棒材。结果表明,纳米晶纯镁棒材的室温拉伸屈服强度达到了265 MPa,压缩屈服强度高达178 MPa。On the basis of obtaining nanocrystalline pure magnesium powder after hydrogenation and dehydrogenation, orthogonal test scheme was adopted to explore the optimal hot-pressing sintering process parameters, and combined with hot extrusion process, large nanocrystalline pure magnesium blocks and bars with average grain size of 15 nm and uniform density were obtained. The results show that the tensile yield strength and the compressive yield strength of nanocrystalline pure magnesium bar reach 265 MPa and 178 MPa at room temperature, respectively.