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江海涛,刘鹏,康强,董鹏,张韵.钙元素含量对Mg-2Al-xCa-0.2Gd镁合金织构演变和性能的影响[J].稀有金属材料与工程(英文),2017,46(12):3897~3902.[Jiang Haitao,Liu Peng,Kang Qiang,Dong Peng,Zhangyun.The Influence of Calcium (Ca) Content on the Texture Evolution and Mechanical Properties of Mg-2Al-xCa-0.2Gd Magnesium Alloys[J].Rare Metal Materials and Engineering,2017,46(12):3897~3902.]
The Influence of Calcium (Ca) Content on the Texture Evolution and Mechanical Properties of Mg-2Al-xCa-0.2Gd Magnesium Alloys
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Received:October 28, 2015  Revised:January 31, 2016
DOI:
Key words: magnesium alloys  calcium  texture  mechanical properties
Foundation item:中央高校基本业务费(FRF-IC-15-002)
Author NameAffiliationE-mail
Jiang Haitao Engineering Research Institute,University of Science and Technology Beijing jianght@ustb.edu.cn 
Liu Peng Engineering Research Institute,University of Science and Technology Beijing  
Kang Qiang Engineering Research Institute,University of Science and Technology Beijing  
Dong Peng Engineering Research Institute,University of Science and Technology Beijing  
Zhangyun 北京科技大学冶金工程研究院 zhangyun9186@126.com 
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Abstract:
      The addition of proper amount of calcium to magnesium alloys can refine grain size, enhance strength and heat-resistant. The influence of different contents of calcium (Ca) on the grain size, texture and mechanical properties of Mg-2Al-xCa-0.2Gd (x=0.2, 0.5, 1.0, 2.0; mass%) were investigated in this paper through the OM, SEM,EBSD and XRD techniques. The results showed that with the increase of the Ca content the grain size gradually decreased which leads to the improvement of strength. However, the texture evolution had different characterization such as the decrease of {0001}<11 0> texture, the firstly increase and then decrease of the pyramidal texture components containing the <11 3> direction, which resulted in the corresponding change of elongation and Erichsen value. The magnesium alloy with 0.5% calcium content exhibited bimodal texture characterization and showed the best mechanical properties with the maximal tensile strength of 238MPa, the total elongation of 22% and the Erichsen value of 4.31mm.