Quick Search:       Advanced Search
冯义成,王雷,付原科,赵思聪,王丽萍,郭二军.热处理对铸造Mg-4Y-3Nd-1.5Al合金显微组织和力学性能影响[J].稀有金属材料与工程(英文),2021,50(5):1826~1832.[Feng Yicheng,Wang Lei,Fu Yuanke,Zhao Sicong,Wang Liping and Guo Erjun.Effect of heat treatment on microstructure and mechanical properties of Mg-4Y-3Nd-1.5Al alloy[J].Rare Metal Materials and Engineering,2021,50(5):1826~1832.]
Effect of heat treatment on microstructure and mechanical properties of Mg-4Y-3Nd-1.5Al alloy
Download Pdf  View/Add Comment  Download reader
Received:July 07, 2020  
DOI:
Key words: Magnesium alloy  Heat treatment  Microstructure  Mechanical properties
Foundation item:国家自然科学基金项目(51804090);黑龙江省科学基金(E2018045)
Author NameAffiliation
Feng Yicheng,Wang Lei,Fu Yuanke,Zhao Sicong,Wang Liping and Guo Erjun  
Hits: 23
Download times: 19
Abstract:
      In this paper, the microstructure and mechanical properties of Mg-4Y-3Nd-1.5Al alloy with different heat treatment conditions were carried out by microstructural analysis and mechanical property testing. The experimental results show that there are Mg5RE, Mg24RE5 and Al2RE intermetallic phases in as-cast Mg-4Y-3Nd-1.5Al alloy and the Mg5RE and Mg24RE5 phases dissolved into α-Mg matrix and Al2RE phases is stable in solid-solution treated Mg-4Y-3Nd-1.5Al alloy. The Mg-4Y-3Nd-1.5Al alloy has an obvious aging hardening effect and the mechanical property can be improved obviously by solution + aging treatment. The yield strength, ultimate tensile strength and elongation of Mg-4Y-3Nd-1.5Al alloy after solution (525℃×6h+550℃×12h)+peak aging (225℃×10h) are 85MPa, 262MPa and 6.5%, respectively. The high density and fine precipitation β" and β" are responsible for the excellent mechanical properties of heat treated Mg-4Y-3Nd-1.5Al alloy.