The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy
Li, J; Shrestha, SL; Long, Y; Li, ZJ; Zhou, XT; Li, ZJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Thorium Molten Salts Reactor Ctr, Shanghai 201800, Peoples R China.
2016
发表期刊MATERIALS & DESIGN
ISSN0261-3069
卷号93期号:-页码:324—333
文章类型期刊文献
摘要The structure and the formationmechanism of brittle eutectic phases and hot cracks formed at grain boundaries were investigated in two Ni-Mo-Cr superalloys with different silicon contents (0.06 and 0.46 wt.%). The eutectic phases and hot cracks can be observed along the rolling direction in the 0.46 wt.% Si heat when heated to 1335 degrees C or a higher peak temperature up to 1365 degrees C. Exposure to the higher peak temperatures resulted in the formation of larger eutectic phases and hot cracks in the higher silicon heat. Conversely, there are fewer eutectic phases and smaller hot cracks forming in the low-silicon heat when heated to 1365 degrees C. The eutectic phases were identified as gamma-M6C' type. Based on the constitutional liquation theory and thermodynamic calculations, it was found that the formation of the eutectic phases and hot cracks is due to the localized melting of primary M6C carbides and surrounding Si-riched matrix. The degree of elements segregation in liquid films determines whether liquid films solidify into eutectic phases or cause hot cracks. This model can reasonably explain the observed phenomena and contribute to designing appropriate solid-solution treatment process and welding procedure to avoid brittle phases and cracks in the Ni-Mo-Cr superalloy. (C) 2015 Elsevier Ltd. All rights reserved.
关键词Heat-affected Zone Discontinuous Precipitation Liquation Cracking Inconel 718 Microstructure Temperature Alloy Reactors Carbide Silicon
DOI10.1016/j.matdes.2015.12.152
收录类别SCI
语种英语
WOS记录号WOS:000369587500036
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25866
专题中科院上海应用物理研究所2011-2018年
通讯作者Long, Y; Li, ZJ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Thorium Molten Salts Reactor Ctr, Shanghai 201800, Peoples R China.
推荐引用方式
GB/T 7714
Li, J,Shrestha, SL,Long, Y,et al. The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy[J]. MATERIALS & DESIGN,2016,93(-):324—333.
APA Li, J,Shrestha, SL,Long, Y,Li, ZJ,Zhou, XT,&Li, ZJ .(2016).The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy.MATERIALS & DESIGN,93(-),324—333.
MLA Li, J,et al."The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy".MATERIALS & DESIGN 93.-(2016):324—333.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
The formation of eut(2974KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Li, J]的文章
[Shrestha, SL]的文章
[Long, Y]的文章
百度学术
百度学术中相似的文章
[Li, J]的文章
[Shrestha, SL]的文章
[Long, Y]的文章
必应学术
必应学术中相似的文章
[Li, J]的文章
[Shrestha, SL]的文章
[Long, Y]的文章
相关权益政策
暂无数据
收藏/分享
文件名: The formation of eutectic phases and hot cracks in one Ni-Mo-Cr superalloy.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。