锻压技术

锻造温度对汽车用镁合金组织和性能的影响

英文标题：Influence of forging temperature on microstructure and properties of automotive magnesium alloy

作者：梁晓亮

单位：广东理工学院

分类号：TG146.2

出版年,卷(期):页码：2018,43(9):169-173

摘要：

为改善和优化汽车用镁合金的组织和力学性能，采用不同的始锻温度和终锻温度对汽车用镁合金进行了显微组织试验和力学试验，并进行了组织和力学性能的测试与分析。结果表明：随始锻温度从380 ℃升高至480 ℃、终锻温度从320 ℃升高至400 ℃，试样的平均晶粒尺寸和断后伸长率先减小后增大，抗拉强度和屈服强度先增大后减小；与380 ℃始锻相比，440 ℃ 始锻时合金的抗拉强度和屈服强度分别增大44和42 MPa；与320 ℃终锻相比，360 ℃终锻时合金的抗拉强度和屈服强度分别增大37和30 MPa。当始锻温度为440 ℃、终锻温度为360 ℃时，显微组织得到极大改善。汽车用镁合金的始锻温度和终锻温度分别优选为440和360 ℃。

In order to improve and optimize the microstructure and mechanical properties of automotive magnesium alloys, the microstructure and mechanical properties of automotive magnesium alloys were investigated by different initial forging temperatures and final forging temperatures, and the microstructure and mechanical properties were tested and analyzed. The results show that with the initial forging temperature increasing from 380 ℃ to 480 ℃ and the final forging temperature increasing from 320 ℃ to 400 ℃, the average grain size and elongation after break of the specimen first decreases and then increases, and the tensile strength and yield strength first increases and then decreases. Compared with initial forging temperature at 380 ℃, the tensile strength and the yield strength increase by 44 MPa and 42 MPa respectively at initial forging temperature of 440 ℃. However, compared with final forging temperature at 320 ℃, the tensile strength and yield strength increase by 37 MPa and 30 MPa respectively at final forging temperature of 360 ℃. Thus, the microstructure of the alloy is greatly improved at initial forging temperature of 440 ℃ and final forging temperature of 360 ℃, and the optimized initial forging temperature and final forging temperature of automotive magnesium alloy are 440 ℃ and 360 ℃, respectively.

基金项目：

广东省教育厅重大科研项目(2017GXJK209);广东理工学院院级科研项目（GKJ2017021）

梁晓亮（1976-），男，硕士，讲师 E-mail：liangxiaolianglxl@126.com

参考文献：

［1］冯美斌.汽车轻量化技术中新材料的发展及应用
［J］.汽车工程,2006,28(3):213-220.

Feng M B. Development and applications of new materials in automotive lightweighting technologies
［J］. Automotive Engineering，2006，28(3):213-220.

［2］骆瑞,李强,孙忠刚,等.轻金属前沿制造技术的研究进展
［J］.轻金属,2011,(4):3-6.

Luo R，Li Q，Sun Z G，et al. Research on front edge manufacturing technology of light metals
［J］. Light Metals，2011,(4):3-6.

［3］陈超. 超塑性镁合金汽车车轮的模锻工艺优化
［J］. 轻合金加工技术，2017，45(1):46-50.

Chen C. Optimization of the die forging process of magnesium-based super-plastic automobile hubs
［J］.Light Alloy Fabrication Technology，2017，45(1):46-50.

［4］朱亚哲,李保成,张治民.镁合金的特点及其塑性加工技术研究进展
［J］.热加工工艺,2012，41(1):88-91.

Zhu Y Z，Li B C，Zhang Z M. Magnesium alloy characteristics and developments of its plastic forming technology
［J］. Hot Working Technology，2012，41(1):88-91.

［5］刘楠,赵东林.镁合金汽车控制臂锻造过程的数值模拟
［J］.热加工工艺,2012，41(9):79-81.

Liu N，Zhao D L. Numerical simulation of forging process for auto control arm of magnesium alloy
［J］. Hot Working Technology，2012，41(9):79-81.

［6］刘正.镁合金铸造成型最新研究进展
［J］.中国材料进展,2011，30(2):10-15.

Liu Z. Progress on research of magnesium casting technique
［J］. Materials China，2011，30(2):10-15.

［7］庆娟,杜忠泽,刘长瑞,等.镁合金塑性加工技术的研究进展
［J］.轻合金加工技术,2006，34(1):14-18.

Qing J，Du Z Z，Liu C R，et al. Development on plastic forming technology of magnesium alloy products
［J］. Light Alloy Fabrication Technology，2006，34(1):14-18.

［8］高建良,章桢彦,靳丽，等.镁合金锻造研究综述
［J］.热加工工艺,2012,41(15):104-108.

Gao J L，Zhang Z Y，Jin L，et al. Review on forging forming technology of magnesium alloy
［J］. Hot Working Technology，2012，41(15):104-108.

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