为了优化铸态Mg-6AI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-6AI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-6AI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%.
参考文献
[1] | T. Grosdidier;J.-J. Fundenberger;D. Goran .On microstructure and texture heterogeneities in single crystals deformed by equal channel angular extrusion[J].Scripta materialia,2008(10):1087-1090. |
[2] | Hsin-Hwa Chen;Jian-Yih Wang;Jye Lee .Superplasticity of AA5083 alloy as processed by equal channel angular extrusion[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):305-308. |
[3] | Saiyi Li .Comments on "Influences of crystallographic orientations on deformation mechanism and grain refinement of Al single crystals subjected to one-pass equal-channel angular pressing"[J].Scripta materialia,2008(4):418-420. |
[4] | Yasumasa Chino;Kensuke Sassa;Mamoru Mabuchi .Enhancement of tensile ductility of magnesium alloy produced by torsion extrusion[J].Scripta materialia,2008(4):399-402. |
[5] | B. Kockar;I. Karaman;J. I. Kim .Thermomechanical cyclic response of an ultrafine-grained NiTi shape memory alloy[J].Acta Materialia,2008(14):3630-3646. |
[6] | A. GHOLINIA;P. B. PRANGNELL;M. V. MARKUSHEV .THE EFFECT OF STRAIN PATH ON THE DEVELOPMENT OF DEFORMATION STRUCTURES IN SEVERELY DEFORMED ALUMINIUM ALLOYS PROCESSED BY ECAE[J].Acta materialia,2000(5):1115-1130. |
[7] | JIANG Ju-fu;LUO Shou-jing .Preparation of semi-solid billet of magnesium alloy and its thixoforming[J].Transactions of Nonferrous Metals Society of China,2007(1):46-50. |
[8] | 姜巨福,罗守靖,王迎.等径道角挤压AZ91D镁合金的半固态组织演变[J].中国有色金属学报,2004(05):752-758. |
[9] | Jufu Jiang;Ying Wang;Shoujing Luo .Application of equal channel angular extrusion to semi-solid processing of magnesium alloy[J].Materials Characterization,2007(2):190-196. |
[10] | 姜巨福 .新SIMA法制备AZ91D半固态坯及其触变模锻研究[D].哈尔滨工业大学,2005. |
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