热处理对Mg-Nd-Gd-Zr稀土镁合金组织与性能的影响
Effect of Heat Treatment on Microstructure and Mechanical Properties of Mg-Nd-Gd-Zr Alloy
张志俊
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作者单位：长春工程学院 机电学院, 吉林 长春 130012
中文关键字：Mg-Nd-Gd-Zr镁合金； 热处理工艺； 微观组织； 力学性能
英文关键字：Mg-Nd-Gd-Zr alloy; heat treatment process; microstructure; mechanical properties.
中文摘要：研究了热处理工艺对Mg-Nd-Gd-Zr镁合金组织与性能的影响。结果表明，采用适当的热处理可细化镁合金的显微组织，并改善镁合金的力学性能。该合金优化的热处理工艺为530 ℃×2 h空冷后再200 ℃×2 h时效，在此热处理制度下，合金获得优良的综合力学性能，显微硬度达到93.4 HV，抗拉强度达到187 MPa。
英文摘要：Effect of heat treatment process on the microstructure and properties of Mg-Nd-Gd-Zr alloy were investigated. The results show that appropriate heat treatment may refine the microstructure of alloy, and improve its mechanical properties. The optimum heat treatment process of Mg-Nd-Gd-Zr alloy is 530 ℃ for 2 h and then aging at 200 ℃ for 2 h. After heat treating, the alloy possesses good mechanical properties. Its hardness and tensile strength reaches 93.4 HV and 187 MPa, respectively.