太原理工大学学报Issue(4)：380-384,5.DOI:10.16355/j.cnki.issn1007-9432tyut.2015.04.003
高压低温烧结 AZ91细晶镁合金及其力学性能的研究
Mechanical Properties of AZ91 Fine Grain Magnesium Alloy Processed by High-pressure and Low-temperature Sintering
摘要
Abstract
In order to refine magnesium grain ,AZ91 alloy with refined grains was prepared by high‐pressure and low‐temperature sintering .The microstructure evolution of sintered alloy was studied by means of metallographic microscope and X‐ray diffraction (XRD) .The effect of sinte‐ring time on the density and hardness of AZ91 alloy was also analyzed .The grain refinement and growth of sintered alloy during high‐pressure and low‐temperature sintering were investigated . The results reveal that AZ91 alloy was sintered completely after 48 hours under 1 200 MPa and 300 ℃ .The average grain size of the sintered alloy was about 10μm .Moreover ,the relative den‐sity of the sintered AZ91 alloy was 99.5% and the hardness of sintered alloy prepared by high‐pressure and low‐temperature sintering increased obviously ,from 81.6 HV of the cast alloy to 103 HV .AZ91 alloy with refined grains was prepared by high‐pressure and low‐temperature sin‐tering ,hoping to provide a new method for recycling industrial magnesium alloy chips and expan‐ding high‐performance magnesium alloy research .关键词
AZ91镁合金/高压低温烧结/晶粒细化/显微硬度Key words
magnesium alloy/high-pressure and low-temperature sintering/grain refinement/hardness分类
矿业与冶金引用本文复制引用
..高压低温烧结 AZ91细晶镁合金及其力学性能的研究[J].太原理工大学学报,2015,(4):380-384,5.基金项目
国家自然科学基金资助项目HDDR原位压制成形法制备纳米晶Mg-Al合金的机理研究，纳米镁基材料中微观结构与性能间的关系研究（50901048，51174143）；教育部新世纪优秀人才支持计划资助（NCET-12-1040）；国家留学基金资助 （）
