Transactions of Materials and Heat Treatment

Title：Influence of solution temperature on microstructure and mechanical properties of 2024 aluminum alloy produced by powder thixoforging

Authors： Wang Zhangjun Chen Tijun

Unit： Lanzhou University of Technology State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals

KeyWords： powder thixoforging 2024 aluminum alloy solution temperature microstructure mechanical properties

ClassificationCode：粉末触变锻造；2024铝合金；固溶温度；显微组织；力学

year,vol(issue):pagenumber：2018,43(10):30-35

Abstract：

2024 aluminum alloy was produced by a new type of powder thixoforging method, and the influences of solution temperature on microstructure and mechanical properties of powder thixoforging and casting 2024 aluminum alloys were studied by optical microscope (OM), scanning electron microscope(SEM) and Xray diffraction (XRD). The results show that the tensile strength, yield strength and elongation rate of powder thixoforging 2024 aluminum alloy increase gradually with the increasing of solution temperature, and the comprehensive mechanical properties achieve the best at 490 ℃×3 h with the tensile strength of 350 MPa, the yield stress of 270 MPa and the elongation rate of 17.5%. However, the best solution technology of casting 2024 aluminum alloy is at 490 ℃×12 h, and its tensile strength, yield strength and elongation rate are 320 MPa, 245 MPa,15.2%, respectively. Comparing with casting 2024 aluminum alloy, the tensile strength, yield strength, and elongation rate of powder thixoforging 2024 aluminum alloy are increased by 9.4%, 10.2%, 15.1%, respectively.

Funds：

甘肃省高校基本科研经费资助项目（G2014-07）;高校新世纪优秀人才资助项目（NCET-10-0023）

王张军（1992-），男，硕士研究生，E-mail：wangzj4991@163.com；通讯作者：陈体军（1971-），男，博士，博士生导师，E-mail：chentj1971@126.com

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