锻压技术

等温锻造ZK60镁合金电气设备壳体的组织与性能

英文标题：Microstructure and properties on ZK60 magnesium alloy electronic equipment shell by isothermal forging

作者：郭慧静胡大力

单位：1.濮阳职业技术学院机电与汽车工程学院 2.河南理工大学材料科学与工程学院

分类号：TH164

出版年,卷(期):页码：2025,50(7):44-49

摘要：

采用等温锻造方法制备了ZK60镁合金电子设备壳体试样，对试样的显微组织、力学性能和耐腐蚀性能进行了测试与分析，并与商用常规锻造ZK60镁合金进行了对比。结果表明：等温锻造高性能ZK60镁合金电子设备壳体具有细小等轴晶形态的内部显微组织，合金平均晶粒尺寸为6.7 μm，较商用常规锻造合金减小11.8 μm；合金的屈服强度和抗拉强度分别达到396和322 MPa，较商用常规锻造合金分别提高了121和108 MPa,合金的断后伸长率为21.1%,与商用常规锻造合金无明显差异；腐蚀100 h后单位面积质量减重较商用常规造合金减小了20.9 mg·mm-2。等温锻造ZK60镁合金电子设备壳体具有较佳的力学性能和耐腐蚀性能。

ZK60 magnesium alloy electrical equipment shell specimens were prepared by isothermal forging method, and the microstructure, mechanical properties and corrosion resistance of specimiens were tested and analyzed,which was compared with commercial conventional forged ZK60 magnesium alloy. The results show that the isothermally forged high-performance ZK60 magnesium alloy electronic equipment shell has an internal microstructure with fine equiaxed crystal morphology. The average grain size of the alloy is 6.7 μm,which is 11.8 μm smaller than that of commercial conventional forged alloy, and the yield strength and tensile strength of the alloy are 396 and 322 MPa, respectively,which are 121 and 108 MPa higher than those of to commercial conventional forged alloy, respectively. The elongation after fracture of the alloy is 21.1%,showing no significant difference from commercial conventional forged alloy. After corrosion for 100 h, the weight loss per unit area is 20.9 mg·mm-2 less than that of commercial conventional forged alloy. The isothermally forged ZK60 magnesium alloy of electronic equipment shell has good mechanical properties and corrosion resistance.

基金项目：

河南省科技攻关计划项目 (172102210433)

作者简介：郭慧静（1981-），女，硕士，讲师 E-mail：xiaolong52123@126.com

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