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Effect of Heat-treatment on Microstructure of Directional Solidification Co-base Superalloy
Authors
孙跃军
张军
林陌思
葛艳辉
Publication date
1 January 2011
Publisher
Abstract
利用XRD和扫描电镜研究了热处理对一种定向凝固Co基合金微观组织的影响。结果表明:Co基合金的铸态组织主要由Co的固溶体基体、M_7C_3、MC和M_(23)C_6碳化物组成,其中M_7C_3和MC为块状,主要分布在枝晶间,M_(23)C_6呈颗粒状,分布在块状M_7C_3和MC周围。合金经1150℃×4h固溶处理后,大部分块状M_7C_3和MC溶入Co的固溶体基体中,在随后的空冷中析出颗粒状M_(23)C_6。在870℃和970℃时效时,随时效温度的升高和时效时间的延长,合金中M23C6的尺寸逐渐增大
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 12/02/2018