热处理对定向凝固Co基合金微观组织的影响
Effect of Heat-treatment on Microstructure of Directional Solidification Co-base Superalloy
查看参考文献7篇
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文摘
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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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其他语种文摘
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The effects of heat-treatment on the microstructure of directional solidification Co-base superalloy were investigated using XRD and SEM.The results show that the microstructure of Co-base superalloy as-cast is composed of Co matrix,M_7C_3,MC and M_(23)C_6.Among them,MC and M_7C_3 distributes in inter dentrite and M_(23)C_6 near the MC and M_7C_3.After solid solution heat-treating at 1150 ℃ for 4 h,most MC and M_7C_3 dissolves into Co-base matrix,M_(23)C_6 is deposited from Co matrix during following air cooling.When aging at 870 ℃and 970 ℃,the size of M_(23)C_6 increases with the increase of temperature and aging time. |
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来源
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热加工工艺
,2011,40(12):152-154,159 【核心库】
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关键词
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定向凝固Co基合金
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固溶
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时效
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碳化物
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地址
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1.
辽宁工程技术大学材料科学与工程学院, 辽宁, 阜新, 123000
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中平能化集团天工机械制造有限公司, 河南, 平顶山, 467000
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中国科学院力学研究所, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-3814 |
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学科
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金属学与金属工艺 |
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文献收藏号
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CSCD:4425540
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参考文献 共
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