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铸造镍基高温合金中初生MC碳化物的退化过程和机理
孙文; 秦学智; 郭建亭; 楼琅洪; 周兰章
2016-04-11
Source Publication金属学报
Issue4Pages:455-462
Abstract采用OM,SEM和TEM及其HAADF模式下的元素面扫描,研究了一种铸造镍基高温合金长期时效期间初生MC碳化物的分解反应过程、形式及机理.结果表明,在长期时效过程中,初生MC分解反应分为3个阶段:MC+g→M_6C+γ′,MC+γ→M_6C+M_(23)C_6+γ′和MC+γ→M_6C+M_(23)C_6+h.HAADF模式下对分解区域进行元素面扫描,浓度梯度显示初生MC分解实际上是元素在初生MC和g基体之间的互扩散交流过程,分解产物中的C主要来源于初生MC,Ni,Al和Cr来源于g基体,而Ti,W和Mo不仅源于g基体也源于初生MC.合金具有较高的Ti+Nb+Ta+Hf原子分数和(Ti+Nb+...
description.department中国科学院金属研究所
Keyword铸造镍基高温合金 长期时效 初生mc 退化机制
Funding Organization国家自然科学基金项目51001101;; 国家能源局项目NY20150102资助~~
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75980
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
孙文,秦学智,郭建亭,等. 铸造镍基高温合金中初生MC碳化物的退化过程和机理[J]. 金属学报,2016(4):455-462.
APA 孙文,秦学智,郭建亭,楼琅洪,&周兰章.(2016).铸造镍基高温合金中初生MC碳化物的退化过程和机理.金属学报(4),455-462.
MLA 孙文,et al."铸造镍基高温合金中初生MC碳化物的退化过程和机理".金属学报 .4(2016):455-462.
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