The Effects of Pre-strain and Subsequent Annealing on the Yielding Behavior in a Rolled Magnesium Alloy AZ31

被引:1
作者
Zhixiang Long
Tianmo Liu
Jiejun He
Yin Zhang
Fusheng Pan
机构
[1] Chongqing University,College of Materials Science and Engineering
[2] Chongqing University,National Engineering Research Center for Magnesium Alloys
来源
Journal of Materials Engineering and Performance | 2015年 / 24卷
关键词
annealing hardening; magnesium alloy; twinning; yield strength;
D O I
暂无
中图分类号
学科分类号
摘要
In present work, pre-compression along the transverse direction and the normal direction (ND) was conducted on the rolled AZ31Mg alloy. Subsequently, the pre-compressed samples were annealed at 250 °C for different times. The effects of pre-compression and post-annealing on the yielding behavior during subsequent compression along ND were investigated. The results revealed that a lot of non-recrystallized extension twin remained in 5% PT sample after annealing for 4 h, while no twin was observed in the 5% PN sample, under the same annealing time. Along with, no prominent changes occurred in the texture of post-annealed as compared to pre-compressed samples. Due to the grain refinement caused by static recrystallization, yield strength increase of 5% PNA sample is found for an annealing time of 30 min. For the 5% PTA sample, the strength increase is attributed to annealing hardening (i.e., annealing retards the detwinning activity and consequently increase the yield strength).
引用
收藏
页码:16 / 23
页数:7
相关论文
共 151 条
[1]  
Zhang F(2012)Role of 1 0-1 2 Twinning and Detwinning in the Shock-Hardening Behavior of Rolled Mg-3Al-1Zn Alloy Scr. Mater. 67 951-954
[2]  
Hao M(2011)Twinning and Grain Subdivision During Dynamic Deformation of a Mg AZ31 Sheet Alloy at Room Temperature Acta Mater. 59 6949-6962
[3]  
Wang FC(2011)On the Role of Non-basal Deformation Mechanisms for the Ductility of Mg and Mg-Y Alloys Acta Mater. 59 429-439
[4]  
Tan CW(2010)Atomic Motion in Mg-3Al-1Zn During Twinning Deformation Scr. Mater. 62 556-559
[5]  
Yu XD(2011)Deformation Behavior of As-rolled and Strip-cast AZ31 Magnesium Alloy Sheets Mater. Sci. Eng. A 528 5356-5365
[6]  
Cai HN(2012)Effect of Heat Treatment on Tension-Compression Yield Asymmetry of AZ80 Magnesium Alloy Mater. Des. 33 529-533
[7]  
Ma HL(2013)Enhancing the Strength of Rolled ZK60 Alloys Via the Combined Use of Twinning Deformation and Aging Treatment Mater. Sci. Eng. A 582 68-75
[8]  
Dudamell NV(2012)Effect of Grain Size on Prismatic Slip in Mg-3Al-1Zn Alloy Scr. Mater. 67 439-442
[9]  
Ulacia I(2009)Effects of Rare-earth Elements Gd and Y on the Solid Solution Strengthening of Mg Alloys J. Alloy. Compd. 481 379-384
[10]  
Gálvez F(2011)The Relation Between Treatment Corrssion Behavior of Mg-Gd-Y-Zr Alloy Mater. Des. 32 361-364