锻压技术

多向锻造对汽车用AZ80镁合金组织及性能的影响

英文标题：Influence of multi-directional forging on microstructure and properties for AZ80 magnesium alloy used for automobile

作者：余富忠赵强李

单位：1.衢州职业技术学院机电工程学院 2.重庆大学材料科学与工程学院

关键词：AZ80镁合金显微组织力学性能多向锻造 EBSD分析

分类号：TG132.25

出版年,卷(期):页码：2021,46(3):32-36

摘要：

为了改善铸态AZ80镁合金组织和性能，对均匀化处理的铸态AZ80镁合金进行了多向锻造试验，并采用金相分析、EBSD（电子背散射衍射）分析和拉伸试验等方法，进行了显微组织和力学性能的测试与分析。结果表明：与锻造前相比，多向锻造后的AZ80镁合金的平均晶粒尺寸减小了约76 μm、抗拉强度增加了66 MPa、屈服强度增加了79 MPa、断后伸长率增大了6%，断裂方式从脆性断裂转变为韧性断裂，多向锻造后合金内部晶粒为细小的等轴晶。因此，多向锻造显著地改善了AZ80镁合金的内部组织、提高了AZ80镁合金的力学性能。

In order to improve the microstructure and properties of as-cast AZ80 magnesium alloy, the multi-directional forging test was carried out, and the microstructure and mechanical properties were tested and analyzed by metallographic analysis, EBSD (Electron Back Scattering Diffraction) analysis and tensile test. The results show that the average grain size of AZ80 magnesium alloy after forging decreases by 76 μm, the tensile strength increases by 66 MPa, the yield strength increases by 79 MPa, the elongation after fracture increases by 6%, and the fracture mode changes from brittle fracture to ductile fracture. After forging, the internal grains of alloy are fine equiaxed crystals. Thus, forging significantly improves the internal microstructure and mechanical properties of alloy.

基金项目：

衢州市科技计划指导性项目(2019017)

余富忠（1972-），男，本科，实验员 E-mail：qzyfz@126.com

参考文献：

[1]李海斌,王仁广.等温锻造对镁合金汽车悬架控制臂性能的影响研究[J].热加工工艺,2017,46(23):151-153,157.

Li H B, Wang R G. Effects of isothermal forging on properties of magnesium alloy automobile suspension control arms [J]. Hot Working Technology,2017,46(23):151-153,157.

[2]吴远志,严红革,刘先兰, 等.ZK60镁合金高应变速率锻造成形[J].哈尔滨工程大学学报,2017,38(3):478-483.

Wu Y Z, Yan H G, Liu X L, et al. Investigation of the highstrainrate forging of ZK60 magnesium alloy [J]. Journal of Harbin Engineering University,2017,38(3):478-483.

[3]潘玲,李明.基于神经网络的钒钛改性镁合金汽车轮圈锻造工艺优化[J].热加工工艺,2018,47(3):167-169,173.

Pan L, Li M. Forging process optimization of vanadiumtitanium modified magnesium alloy automobile wheel rim based on neural network [J]. Hot Working Technology,2018,47(3):167-169,173.

[4]石彩华.高强镁合金锻造加工工艺与组织性能研究[J].铸造技术,2018,39(4):886-889.

Shi C H. Processing technology and microstructure properties of highstrength magnesium alloy [J]. Foundry Technology,2018,39(4):886-889.

[5]邹景锋,马立峰,朱艳春, 等.径向锻造成形技术及其在镁合金锻造中的应用[J].轻金属,2018,28(5):48-52.

Zou J F, Ma L F, Zhu Y C, et al. The application of radial forging forming technology to magnesium alloy forging [J]. Light Metals,2018,28(5):48-52.

[6]张占领,张艳琴.镁合金半固态锻造模设计与制造[J]. 铸造技术, 2018, 39(1):116-119.

Zhang Z L, Zhang Y Q. Design and manufacture of semisolid forging die for magnesium alloy [J]. Foundry Technology,2018,39(1):116-119.

[7]郝孟军,宫涛,代艳霞.汽车轮毂用改性镁合金锻造工艺[J].锻压技术,2019,44(4):22-27.

Hao M J, Gong T, Dai Y X. Modified magnesium alloy forging process for automobile hub[J]. Forging & Stamping Technology,2019,44(4):22-27.

[8]童伊琳.高应变速率锻造含钛机械壳体镁合金的组织与性能[J].钢铁钒钛,2019,40(2):66-70,78.

Tong Y L. Microstructure and properties of magnesium alloy for titaniumcontaining mechanical shell forged at high strain rate[J]. Iron Steel Vanadium Titanium,2019,40(2):66-70,78.

[9]张西武,向文丽,舒鑫柱, 等.ZK61镁合金锻造组织动态力学行为各向异性研究[J].云南大学学报：自然科学版,2019,41(1):123-128.

Zhang X W, Xiang W L, Shu X Z, et al. A study on anisotropy of the dynamic mechanical behavior of forged ZK61 magnesium alloy[J]. Journal of Yunnan University：Natural Sciences Edition,2019,41(1):123-128.

[10]郭强,严红革,陈振华, 等.AZ80镁合金多向锻造变形过程中晶粒取向的演变[J].金属学报,2007,43(6):619-624.

Guo Q, Yan H G, Chen Z H, et al. Evolution of the grain orientation of AZ80 magnesium alloy during multiple forging process[J]. Acta Metallurgica Sinica,2007,43(6):619-624.

[11]叶景申,张宝红,于建民, 等.MgGdY-NdZr稀土镁合金多方向锻造研究[J].热加工工艺,2015,44(5):122-124.

Ye J S, Zhang B H, Yu J M, et al. Research on multidirectional forging of MgGdY-NdZr magnesium alloy[J]. Hot Working Technology,2015,44(5):122-124.

[12]刘窈伶,邵建波,陈志永, 等.LPSO相对多向锻造过程中Mg96Zn1Gd3镁合金再结晶行为的影响[J].热加工工艺,2019,48(14):19-22,26.

Liu Y L, Shao J B, Chen Z Y, et al. Effect of LPSO phase on recrystallization behavior of Mg96Zn1Gd3 alloy during multidirection forging process[J]. Hot Working Technology,2019,48(14):19-22,26.

服务与反馈：

【本网站尚未开通全文下载服务】【加入收藏】