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刘艳,龙思远,袁颖,刘青,游国强.MgCO3、CO2、CO对AM60B合金晶粒细化的影响[J].稀有金属材料与工程(英文),2019,48(1):190~196.[Liu Yan,Long Siyuan,Yuan Ying,Liu Qing and You Guoqiang.Effects of MgCO3 and Gaseous CO2 and CO on Grain Refinement in AM60B Alloy[J].Rare Metal Materials and Engineering,2019,48(1):190~196.]
Effects of MgCO3 and Gaseous CO2 and CO on Grain Refinement in AM60B Alloy
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Received:May 26, 2017  Revised:November 28, 2017
DOI:
Key words: Mg-Al alloy  inoculation, CO2, CO, MgCO3
Foundation item:国家重点研发计划项目(2016YFB0301100)
Author NameAffiliation
Liu Yan,Long Siyuan,Yuan Ying,Liu Qing and You Guoqiang  
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Abstract:
      Based on the equal addition amount of carbon, the effects of MgCO3, CO2 and CO on grain refinement in AM60B alloy were investigated. The results indicated that the average grain size of AM60B alloy reduced from 213μm to 116μm, 90μm and 106μm respectively due to the addition of MgCO3, CO2 and CO. Also, the Vickers hardness, tensile strength, yield strength and elongation of AM60B alloy inoculated by MgCO3, CO2 and CO were all improved in some degree, moreover, AM60B alloy treated by CO2 have the best mechanical properties, followed by CO and MgCO3 in sequence. In addition, supported by SEM, EDS and XRD, the observed Al4C3 particles as a result of the addition of MgCO3, CO2 and CO should be responsible for the grain refinement of treated AM60B alloy.