锻压技术

坯料预热方式对AZ80镁合金轮毂组织和性能的影响

英文标题：Influence of billet preheating method on microstructure and properties for AZ80 magnesium alloy wheel hub

作者：胡美些狄石磊

单位：1.内蒙古机电职业技术学院教师发展中心 2.内蒙古鄂尔多斯市蒙泰铝业有限责任公司

分类号：TG319

出版年,卷(期):页码：2022,47(9):39-44

摘要：

采用对比的方法，研究了经过410 ℃/23 h的均质化处理后，直接锻压和再热锻压对轮毂组织和性能的影响。结果表明：均质化处理后直接锻压可以提高生产效率、节约能源，锻压后轮毂的表面质量较好，无表面裂纹和折叠等锻压缺陷，但是其力学性能明显低于均质化处理后再热锻压的轮毂，而且显微组织中晶粒大小不均匀，晶界上的再结晶晶粒细小，晶内的单相固溶体比较粗大；而均质化处理后，经过435 ℃/7.5 h的锻前再热处理后锻压获得的轮毂的组织均匀细小、晶界细，存在明显的锻压织构，轮毂各部位的力学性能均高于均质化处理后直接锻压的轮毂的力学性能，尤其是轮辋、轮辐部位的力学性能相差较大。

The influences of direct forging and hot forging after 410 ℃/23 h homogenization treatment on the microstructure and properties of wheel hub were studied by means of contrast. The results show that the direct forging after homogenization treatment can improve production efficiency and save energy, the surface quality of wheel hub after forging is better, and there are no forging defects such as surface cracks and folding. However, its mechanical properties are obviously lower than those of the wheel hub after homogenization treatment and hot forging, the grain size is not uniform in the microstructure, the recrystallized grain is small on the grain boundary, and the single-phase solid solution in the grain is relatively coarser. After the homogenization treatment, the microstructure of the forged wheel hub after re-heat treatment at 435 ℃ for 7.5 h before forging is uniform and fine with fine grain boundary and obvious forging texture. The mechanical properties of all parts for the wheel hub are higher than those of the wheel hub that is homogenized treatment and then directly forged, especially, the mechanical properties of rim and spoke are different greatly.

基金项目：

胡美些(1977-)，女，硕士，副教授 E-mail：710679063@qq.com

参考文献：

[1]庄贵阳. 我国实现“双碳”目标面临的挑战及对策[J].人民论坛，2021,(18)：50-53.

Zhuang G Y. The challenge and countermeasure of realizing“double carbon” target in our country[J].People′s Tribune,2021,(18)：50-53.

[2]Martin Goede， Marc Stehlin，Lukas Rafflenbeul，et al. Super light car-light weight construction thanks to a multi-material design and function integration [J]. European Transport Research Review,2009,(1):5-10.

[3]张华，曾遨日，许兰锋，等. Cu对镁合金/双相钢激光深熔焊组织及力学性能影响[J].稀有金属,2021,45(7):804-811.

Zhang H，Zeng A R，Xu L F，et al. Characteristics of laser deep penetration welding of Mg alloy/steel controlled by Cu[J]. Chinese Journal of Rare Metals, 2021,45(7):804-811.

[4]陈月凤，陈玉师.镁合金轮毂的铸造工艺与组织性能[J].铸造，2020,69（7）:737-742.

Chen Y F, Chen Y S. Casting process and microstructure properties of magnesium alloy wheel hub[J].Foundry，2020,69（7）:737-742.

[5]任佳智，徐帆.浅谈汽车轻量化技术[J].内燃机与配件,2021，（16）：177-178.

Ren J Z, Xu F. Talking about lightweight technology of automobile[J].Internal Combustion Engine & Parts，2021，（16）：177-178.

[6]关文迁. 镁合金轮毂在汽车行业的应用现状和制造工艺[J].汽车实用技术,2020，（9）:225-226.

Guan W Q. Application status and manufacturing process of magnesium alloy wheels in the automotive industry[J].Automobile Applied Technology,2020，（9）:225-226.

[7]田董扩. 热处理与变形工艺对轮毂用镁合金组织性能的影响[D].包头：内蒙古科技大学，2020.

Tian D K. Effect of Heat Treatment and Deformation Process on Microstructure and Properties of Magnesium Alloy for Wheel Hub[D].Baotou: Inner Mongolia University of Science and Technology，2020.

[8]李建，陶慕华，王利梅，等.AZ80镁合金车轮热旋压性能研究[J].热加工工艺,2017,46（1）：149-151.

Li J, Tao M H, Wang L M,et al.Study on hot spinning performance of AZ80 magnesium alloy wheel[J].Hot Working Technology,2017,46（1）：149-151.

[9]张津，等.镁合金选用与设计[M].北京：化学工业出版社，2017.

Zhang J,et al.Selection and Design of Magnesium Alloy[M].Beijing: Chemical Industry Press，2017.

[10]邵海泉，李强军. Nd含量对铸锻加工AZ91D镁合金微观组织和力学性能的影响 [J]. 锻压技术，2020,45(6):189-193.

Shao H Q，Li Q J. Influence of Nd content on microstructure and mechanical properties of casting and forging AZ91D magnesium alloy [J]. Forging & Stamping Technology，2020,45(6):189-193.

[11]张宗良, 刘楚明,高永浩,等. Mg-9Gd-3Y-0.6Zr-0.05Ag镁合金模锻件微观组织及力学性能不均匀性研究[J]. 锻压技术,2021,46(2):206-212.

Zhang Z L，Liu C M，Gao Y H，et al. Study on inhomogeneity of microstructure and mechanical property for Mg-9Gd-3Y-0.6Zr-0.05Ag magnesium alloy die forgings [J]. Forging & Stamping Technology，2021,46(2):206-212.

[12]殷银银. 镁合金轮毂挤压工艺研究[D].洛阳：河南科技大学，2010.

Yin Y Y.Study on Extrusion Technology of Magnesium Alloy Wheel[D].Luoyang: Henan University of Science and Technology，2010.

[13]高仑. 镁合金成形技术的开发与应用[J].轻合金加工技术,2004,(3)：5-12.

Gao L.Exploit and application of magnesium alloy forming technology[J].Light Alloy Fabrication Technology,2004,(3)：5-12.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】