应变速率对镁合金GW123K塑性的影响
Influence of Tensile Strain Rate on Ductility of GW123K Magnesium Alloy
摘 要
对高强耐热镁合金GW123K在不同应变速率(10-5, 10-3, 1 s-1)下进行室温拉伸试验, 利用光学显微镜和扫描电镜对其组织和断口形貌进行观察, 研究了应变速率对合金塑性的影响。结果表明: 随着应变速率的增大, 镁合金的塑性也相应提高, 材料断裂时的应变分别为0.13, 0.12, 0.25, 表现出异常的应变速率敏感性。
应变速率敏感性
断口分析
织构
magnesium alloy
strain rate sensitivity
fracture analysis
texture
Abstract
Tensile tests were conducted on high strength and heat resisting GW123K magnesium alloy at room temperature with strain rate of 10-5,10-3,1 s-1,respectively. Then the microstructure and fracture surface were observed with optical microscopy (OM) and scanning electron microscopy (SEM) to study the effect of strain rate on the ductility of the magnesium alloy. Results show that the ductility of the magnesium alloy improved with the increase of strain rate. When the magnesium alloy fractured, the strain was 0.13, 0.12, 0.25, respectively, which showed abnormal strain rate sensitivity of the alloy.
中图分类号 TG359
所属栏目 新材料 新工艺
基金项目 国家自然科学基金资助项目(10647138); 辽宁省教育厅科学研究项目(20060667)
收稿日期 2013/4/11
修改稿日期 2014/3/30
网络出版日期
作者单位点击查看
备注石晓飞(1978-), 男, 辽宁沈阳人, 讲师, 学士。
引用该论文: SHI Xiao-fei,CHENG Tai-min,LI Xin,SUN Shu-sheng. Influence of Tensile Strain Rate on Ductility of GW123K Magnesium Alloy[J]. Materials for mechancial engineering, 2014, 38(6): 56～59
石晓飞,成泰民,李新,孙树生. 应变速率对镁合金GW123K塑性的影响[J]. 机械工程材料, 2014, 38(6): 56～59
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参考文献
【1】陈振华.耐热镁合金［M］.北京:化学工业出版社,2007: 8-15.
【2】ROKHLIN L L . Magnesium alloys containing rrear earth metals ［M］.London :Taylor and Francis,2003: 10-34.
【3】HE S M, ZENg X Q, PENG L M, et al. Microstructure and strengthening mechanism of high strength Mg-10Gd-2Y-0.5 Zr alloy［J］.Journal of Alloys and Compounds,2007,427(1):316-323.
【4】廖慧敏,龙思远,蔡军,等.高应变速率对AM60镁合金力学行为的影响［J］.机械工程材料,2009, 33(1):129-132.
【5】徐绍勇,龙思远,廖慧敏, 等. 应变速率对 AZ31 挤压变形镁合金力学行为的影响［J］.材料热处理学报,2010(5):44-48.
【6】廖慧敏,龙思远,蔡军.应变速率对 AZ91D 镁合金力学行为影响［J］.材料科学与工艺,2010 (1):120-123.
【7】赵一生.应变速率对稀土镁合金动能吸收能力的影响［J］.兵器材料科学与工程,2011,34(3):21-23.
【8】WU X, LIU Y. Superplasticity of coarse-grained magnesium alloy［J］.Scripta Materialia,2002,46(4):269-274.
【9】DEL VALLE J A, PéREZ-PRADO M T, RUANO O A. Deformation mechanisms responsible for the high ductility in a Mg AZ31 alloy analyzed by electron backscattered diffraction［J］.Metallurgical and Materials Transactions:A,2005,36(6):1427-1438.
【10】MATSUBARA K, MIYAHARA Y, HORITA Z, et al. Developing superplasticity in a magnesium alloy through a combination of extrusion and ECAP［J］.Acta Materialia,2003,51(11):3073-3084.
【11】岑风,陈益华,张珂.金属材料室温拉伸试验新旧国家标准的对比分析［J］.理化检验-物理分册,2012,48(12):804-807.
【12】GAO Y, WANG Q, GU J, et al. Behavior of Mg-15Gd-5Y-0.5 Zr alloy during solution heat treatment from 500 to 540 C［J］.Materials Science and Engineering: A,2007,459(1):117-123.
【13】ZHANG Z F, ECKERT J. Unified tensile fracture criterion［J］.Physical Review Letters,2005,94(9):09430-1-09430-4
【2】ROKHLIN L L . Magnesium alloys containing rrear earth metals ［M］.London :Taylor and Francis,2003: 10-34.
【3】HE S M, ZENg X Q, PENG L M, et al. Microstructure and strengthening mechanism of high strength Mg-10Gd-2Y-0.5 Zr alloy［J］.Journal of Alloys and Compounds,2007,427(1):316-323.
【4】廖慧敏,龙思远,蔡军,等.高应变速率对AM60镁合金力学行为的影响［J］.机械工程材料,2009, 33(1):129-132.
【5】徐绍勇,龙思远,廖慧敏, 等. 应变速率对 AZ31 挤压变形镁合金力学行为的影响［J］.材料热处理学报,2010(5):44-48.
【6】廖慧敏,龙思远,蔡军.应变速率对 AZ91D 镁合金力学行为影响［J］.材料科学与工艺,2010 (1):120-123.
【7】赵一生.应变速率对稀土镁合金动能吸收能力的影响［J］.兵器材料科学与工程,2011,34(3):21-23.
【8】WU X, LIU Y. Superplasticity of coarse-grained magnesium alloy［J］.Scripta Materialia,2002,46(4):269-274.
【9】DEL VALLE J A, PéREZ-PRADO M T, RUANO O A. Deformation mechanisms responsible for the high ductility in a Mg AZ31 alloy analyzed by electron backscattered diffraction［J］.Metallurgical and Materials Transactions:A,2005,36(6):1427-1438.
【10】MATSUBARA K, MIYAHARA Y, HORITA Z, et al. Developing superplasticity in a magnesium alloy through a combination of extrusion and ECAP［J］.Acta Materialia,2003,51(11):3073-3084.
【11】岑风,陈益华,张珂.金属材料室温拉伸试验新旧国家标准的对比分析［J］.理化检验-物理分册,2012,48(12):804-807.
【12】GAO Y, WANG Q, GU J, et al. Behavior of Mg-15Gd-5Y-0.5 Zr alloy during solution heat treatment from 500 to 540 C［J］.Materials Science and Engineering: A,2007,459(1):117-123.
【13】ZHANG Z F, ECKERT J. Unified tensile fracture criterion［J］.Physical Review Letters,2005,94(9):09430-1-09430-4
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