等温热处理对AM60-1Si合金半固态组织的影响

doi:10.3969/j.issn.1000-1093.2016.04.017

兵工学报 ›› 2016, Vol. 37 ›› Issue (4): 690-695.doi: 10.3969/j.issn.1000-1093.2016.04.017

等温热处理对AM60-1Si合金半固态组织的影响

胡勇^1,2，饶丽¹，邹天平¹

(1.华东交通大学机电工程学院江西南昌 330013; 2.江西省科学院钨铜新材料重点实验室江西南昌 330029)

收稿日期:2015-07-03 修回日期:2015-07-03 上线日期:2016-06-20
作者简介:胡勇（1982—），男，副教授，博士
基金资助:
江西省自然科学基金项目(20142BAB216015)；江西省钨铜新材料重点实验室开放基金项目(2013-KLP-07)

Effect of Isothermal Heat Treatment on the Semi-solid Microstructure of AM60-1Si Alloy

HU Yong^1,2， RAO Li¹， ZUO Tian-ping¹

(1.School of Mechanical and Electronical Engineering, East China Jiaotong University, Nanchang 330013, Jiangxi, China;2.Jiangxi Key Laboratory for Advanced Copper and Tungsten Materials, Jiangxi Academy of Sciences, Nanchang 330029, Jiangxi, China)

Received:2015-07-03 Revised:2015-07-03 Online:2016-06-20

摘要/Abstract

摘要： 采用半固态等温处理法研究保温温度和保温时间对AM60-1Si合金半固态组织的影响规律。研究结果表明： AM60-1Si合金的半固态组织经历了近球状晶粒的形成、晶粒的球化和球晶的长大过程；随着保温温度的增加和保温时间的延长，初生α-Mg固相颗粒的尺寸先减小、后增大；605 ℃时保温45 min可获得晶粒细小、分布均匀且球状的半固态组织；在等温处理的过程中，汉字状的Mg₂Si相变为近球状。

关键词: 金属材料, 半固态, Mg2Si, 等温热处理, 微观组织

Abstract: The effect of isothermal heat treatment on the microstructure of semi-solid AM60-1Si alloy is investigated. The results show that the semi-solid microstructure evolution of AM60-1Si alloy experiences three stages, i.e., formation of globular particles, spheroidization and coarsening, during isothermal heat treatment process. With the increase in holding temperature and holding time, the size of primary α-Mg phase decreases at first and then increases. The fine well-distributed globular semi-solid microstructure can be obtained at 605 ℃ for 45 min. The Mg₂Si phase changes from initial Chinese script shape to polygon shape during isothermal heat treatment.

Key words: metallic material, semi-solid, Mg₂Si, isothermal heat treatment, microstructure

中图分类号:

TG146.22

胡勇，饶丽，邹天平. 等温热处理对AM60-1Si合金半固态组织的影响[J]. 兵工学报, 2016, 37(4): 690-695.

HU Yong， RAO Li， ZUO Tian-ping. Effect of Isothermal Heat Treatment on the Semi-solid Microstructure of AM60-1Si Alloy[J]. Acta Armamentarii, 2016, 37(4): 690-695.

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等温热处理对AM60-1Si合金半固态组织的影响

Effect of Isothermal Heat Treatment on the Semi-solid Microstructure of AM60-1Si Alloy

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