热处理工艺对锌合金组织和力学性能的影响  

Effect of Heat Treatment Process on Microstructure and Mechanical Properties of Zinc Alloy

作　　者：成佳[1] 史庆南[1] 起华荣[1] 张海杰 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]北车兰州机车有限公司,甘肃兰州730050

出　　处：《热加工工艺》2016年第2期213-214,219,共3页Hot Working Technology

摘　　要：通过力学性能测试、扫描电镜等试验,研究锌合金经过热处理后的组织和性能。结果表明：热处理后锌合金晶粒细化,由等轴状的η（Zn）相、共晶组织以及第二相组成;200~350℃热处理3 h随炉冷却使共晶组织由片层状转变为颗粒状;较好的热处理工艺是350℃保温3 h,随炉冷却,锌合金的抗拉强度达到190 MPa,伸长率达到10%。Effects of heat treatment on microstructure and properties of zinc alloy were investigated by mechanical test and SEM experiment. The results show that the zinc alloy grain is refined after heat treatment, and zinc alloy is composed of equiaxedη （Zn）, eutectic phase and the second phase. After heat treatment at 200-350 ℃ for 3 h, along with furnace cooling process make eutectic phase from slice layer gradually transform into granular mierostructure. Heating at 350 ℃ for 3 h, along with furnace cooling process, the tensile strength of the zinc alloy reaches 190MPa, elongation reaches 10%.

关 键 词：热处理 锌合金 组织 力学性能 

分 类 号：TG146.13[一般工业技术—材料科学与工程] TG113[金属学及工艺—金属材料]