[1]王智祥,刘金明,刘柏雄,等.AZ61镁合金热压缩流变应力的实验[J].华侨大学学报(自然科学版),2009,30(3):248-252.[doi:10.11830/ISSN.1000-5013.2009.03.0248]
　WANG Zhi-xiang,LIU Jin-ming,LIU Bai-xiong,et al.Study on Flow Stress of AZ61 Magnesium Alloy in Hot Compression Deformation[J].Journal of Huaqiao University(Natural Science),2009,30(3):248-252.[doi:10.11830/ISSN.1000-5013.2009.03.0248]
点击复制

AZ61镁合金热压缩流变应力的实验()
分享到：

《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第30卷
期数:
2009年第3期
页码:
248-252
栏目:
出版日期:
2009-05-20

文章信息/Info

Title:
Study on Flow Stress of AZ61 Magnesium Alloy in Hot Compression Deformation
文章编号:
1000-5013(2009)03-0248-05
作者:
王智祥; 刘金明; 刘柏雄; 刘斌
江西理工大学材料与化学工程学院; 华侨大学机电及自动化学院
Author(s):
WANG Zhi-xiang1;  LIU Jin-ming1;  LIU Bai-xiong1;  LIU Bin2
1.School of Material and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China; 2.College of Mechanical Engineering and Automation, Huaqiao University, Quanzhou 362021, China
关键词:
镁合金;  热变形;  流变应力;  激活能;  应变速率
Keywords:
magnesium alloy;  hot deformation;  flow stress;  activation energy;  strain rate
分类号:
TG115.53
DOI:
10.11830/ISSN.1000-5013.2009.03.0248
文献标志码:
A
摘要:
采用Gleeble-1500型热模拟机,对AZ61镁合金进行高温压缩实验,分析该合金在不同变形温度与应变速率条件下的压缩流变应力.研究AZ61镁合金在热变形时,流变应力与变形温度、应变速率之间的关系,并建立相应的流变应力模型.结果表明,AZ61镁合金在高温压缩变形时,当变形温度一定时,流变应力随应变速率的增大而增大; 而当应变速率一定时,流变应力随变形温度的升高而降低.AZ61镁合金的热变形过程均表现出较明显的动态再结晶特征,其流变应力的变化规律主要受加工硬化和再结晶软化两者机制的共同作用.在热变形下,AZ61镁合金峰值流变应力可以用双曲正弦模型来进行较好的描述.
Abstract:
Hot compression experiments of AZ61 magnesium alloy was performed on Gleeble-1500 thermal simulation testing machine,then the compression flow stress of the alloy was analyzed under the different deformation temperatures and strain rates.The relationship among the flow stress,the deformation temperatures and the strain rates was studied during hot deformation of AZ61 magnesium alloy,and the corresponding model of flow stress was established.The results showed that the flow stress increased with the strain rate increasing at the constant temperature,and the flow stress decreased with the deformation temperature increasing at the constant strain rate during the hot compression deformation of AZ61 magnesium alloy.The process of the hot deformation of AZ61 magnesium alloy had been characteristic of dynamic recrystallization all the time a little obviously,in which its flow stress was affected by the combination of work-hardening and dynamic recrystallization softening.It was indicated that during the hot compression,the peak value of flow stress of AZ61 magnesium alloy could be depicted by the hyperbolic-sine mathematical model preferably.

参考文献/References:

[1] MORDIKE B L, EBERT T. Magnesium properties-application-potential [J]. Mater Sci Eng (A), 2001, (302):37-45.
[2] FRIEDRICH H, SCHUMANN S. Research for a "new age of magnesium" in the automotive industry [J]. Journal of Materials Processing Technology, 2001, (117):276-281.doi:10.1016/S0924-0136(01)00780-4.
[3] 马图哈 K H, 师昌绪. 非铁合金的结构与性能 [A]. 北京:科学出版社, 1999.
[4] TAKUDA H, FUJIMOTO H, HATTA N. Modelling on flow stress of Mg-Al-Zn alloys at elevated temperatures [J]. J Mater Process Teeh, 1998, (80/81):513-516.
[5] 范永革, 汪凌云, 黄光胜. 变形镁合金高温变形流变应力分析 [J]. 重庆大学学报(自然科学版), 2003(2):9-11.doi:10.3969/j.issn.1000-582X.2003.02.003.
[6] GALIYEV A, KAIBYSHEV R, SAKAI T. Continuous dynamic recrystallization in magnesium alloys [J]. Materials Science Forum, 2003, (419/422):509-514.
[7] TAN J C, TAN M J. Dynamic continuous recrystallization characteristics in two srage deformation of Mg-3Al-1Zn alloy sheet [J]. Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing, 2003, (339):124-132.
[8] Poirier J P, 关德林. 晶体的高温塑性变形 [M]. 大连:大连理工大学出版社, 1989.
[9] MCQUEEN H J, RYAN N D. Constitutive analysis in hot working [J]. Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing, 2002, (322):43-63.
[10] GRONOSTAJSKI Z J. Model describing the characteristic values of flow stress and strain of brass M63 and aluminium bronze BA93 [J]. Journal of Materials Processing Technology, 1998, (78):84-89.doi:10.1016/S0924-0136(97)00467-6.
[11] IMBERT C A C, MCQUEEN H J. Peak strength, strain hardening and dynamic restoration of A2 and M2 tool steels in hot deformation [J]. Mater Sei Eng (A), 2001, (313):88-103.
[12] LIU Jian-tao, CHANG Hong-bing, WU Rui-hang. Investigation on hot deformation behavior of AISI T1 high-speed steel [J]. Materials Characterization, 2000(3):175-186.

相似文献/References:

[1]李易平,庄有土,张伯霖.用热管均衡机床大件的温度场[J].华侨大学学报(自然科学版),1991,12(1):9.[doi:10.11830/ISSN.1000-5013.1991.01.0009]
　Li Yipin,Zhuang Youtu,Zhang Bolin,et al.Equalizing the Temperature Field of Machine Tools by Heat Pipe[J].Journal of Huaqiao University(Natural Science),1991,12(3):9.[doi:10.11830/ISSN.1000-5013.1991.01.0009]

备注/Memo

备注/Memo:
福建省科技计划重点项目(2006H0029)
更新日期/Last Update: 2014-03-23