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.
作者
高静
樊建锋
郭卉君
田笑颖
GAO Jing;FAN Jianfeng;GUO Huijun;TIAN Xiaoying(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)
出处
《铸造技术》
CAS
2019年第7期649-653,656,共6页
Foundry Technology
基金
国家自然科学基金资助项目(U1810122,51504162,U1710118,51601123)
山西省高等学校创新人才支持计划(2018)
山西省自然科学基金(201801D221139)
山西省科技基础条件平台建设项目(201605D121030)
山西省人才专项(优秀人才科技创新)项目(201605D211015)
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
