| 引用本文: | 姜巨福,程远胜,林鑫,曲建俊.等径道角挤压对Mg-6Al合金性能的影响[J].材料科学与工艺,2010,18(6):752-757.DOI:10.11951/j.issn.1005-0299.20100603. |
| JIANG Ju-fu,CHENG Yuan-sheng,LIN Xin,QU Jian-jun.Influence of equal channel angular extrusion on the properties of Mg-6Al alloy[J].Materials Science and Technology,2010,18(6):752-757.DOI:10.11951/j.issn.1005-0299.20100603. |
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| 摘要: |
| 为了优化铸态Mg-6Al合金等径道角挤压的工艺参数,通过等径道角挤压实验研究了工艺参数对其性能的影响.研究表明:等径道角挤压可大幅度提高Mg-6Al合金坯料的力学性能.当Mg-6Al合金挤压1道次至4道次后,其力学性能提高较大,微观组织明显细化.随挤压温度从260℃升高至300℃,被挤压坯料的力学性能先提高后降低.当挤压路径为路径B,挤压道次为4道次,挤压温度为300℃时,Mg-6Al合金的力学性能最高,其抗拉强度为308.2 MPa,延伸率达到30.6%. |
| 关键词: 等径道角挤压 Mg-6Al合金 微观组织 力学性能 |
| DOI：10.11951/j.issn.1005-0299.20100603 |
| 分类号:TG379 |
| 基金项目:国家自然科学基金资助项目(51075099);西北工业大学凝固技术国家重点实验室开放课题资助项目(SKLSP201121);中国博士后基金资助项目(20090460884);黑龙江省自然科学基金资助项目(E201038);黑龙江省博士后启动基金资助项目(LBH-Q08104) |
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| Influence of equal channel angular extrusion on the properties of Mg-6Al alloy |
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JIANG Ju-fu1,2, CHENG Yuan-sheng3, LIN Xin2, QU Jian-jun1
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1.Postdoctoral Mobile Station of Mechanical Engineering,Harbin Institute of Technology,Harbin 150001,China;2.The State Key Laboratory of Solidification Processing in Northwestern Polytechnical University,Xi′An 710072,China;3.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China
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| Abstract: |
| To optimize the process parameters of equal channel angular extrusion(ECAE),a series of ECAE experiments has been done to investigate the effects of process parameters of ECAE on the properties of Mg-6Al.The results show that the mechanical properties of Mg-6Al are improved greatly after being extruded.When the Mg-6Al alloy was processed by ECAE from 1 pass to 4 passes,the mechanical properties were increased evidently and the microstructure was refined well.When the extrusion temperature was increased from 260 ℃ to 300 ℃,the mechanical properties were increased at first and then decreased.The best mechanical properties of tensile strength of 308.2 MPa and elongation of 30.6% could be obtained under such experimental conditions: test route B,4 extrusion passes and extrusion temperature of 300 ℃. |
| Key words: equal channel angular extrusion Mg-6Al alloy microstructure mechanical properties |
