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Ti含量对NiAl-Cr(Mo)共晶合金凝固组织的影响
Alternative TitleEffect of Ti addition on the microstructure of NiAl-Cr(Mo) eutectic alloy
肖旋; 贾玉贤; 周兰章; 郭建亭
2008
Source Publication材料研究学报
ISSN1005-3093
Volume22.0Issue:002Pages:209-214
Abstract添加Ti降低了NiAl-Cr(Mo)共晶合金凝固过程中NiAl/Cr(Mo)共晶生长速度,导致NiAl/Cr(Mo)胞状共晶组织的粗化,并因合金偏离共晶成分而促进先共晶NiAl相的形成.在添加Ti的NiAl-Cr(Mo)共晶合金中,Ti主要分布在基体NiAl相中.随着Ti含量的提高,过饱和的NiAl(Ti)基体发生分解,促进了Ni_2AlTi相的形成,并且NiAl/Cr(Mo)胞状共晶组织发生退化.Ni-33Al-28Cr-3Mo-5Ti共晶合金的NiAl基体中析出细小的Cr(Mo)相,Cr(Mo)共晶相中析出细小的NiAl相.
Other AbstractThe results show that Ti addition lowers the growth speed of NiAI/Cr(Mo) eutectics during solidification of a NiAI-Cr(Mo) eutectic alloy, resulting in coarsening of NiAI/Cr(Mo) cellular eutectic structure, and pro-eutectic NiAI phase forms due to its composition departing from eutectic reaction point. Ti atoms mainly distributes in NiAl matix. With the increase of Ti content in the alloy, supersaturation of NiAI matrix with Ti decomposes and brings on the formation of Ni2AlTi phase, simultaneously NiAI/Cr(Mo) cellular eutectic structure degenerates also. In the Ni-33Al-28Cr-3Mo-5Ti eutectic alloy, fine Cr(Mo) coherent particles precipitate in NiAI matrix, while small Cr(Mo) coherent precipitates exsit in Cr(Mo) eutectic phase.
Keyword金属材料 金属间化合物 NiAl-Cr(Mo)共晶合金 合金化 凝固组织
Indexed ByCSCD
Language中文
CSCD IDCSCD:3244416
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/147930
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
肖旋,贾玉贤,周兰章,等. Ti含量对NiAl-Cr(Mo)共晶合金凝固组织的影响[J]. 材料研究学报,2008,22.0(002):209-214.
APA 肖旋,贾玉贤,周兰章,&郭建亭.(2008).Ti含量对NiAl-Cr(Mo)共晶合金凝固组织的影响.材料研究学报,22.0(002),209-214.
MLA 肖旋,et al."Ti含量对NiAl-Cr(Mo)共晶合金凝固组织的影响".材料研究学报 22.0.002(2008):209-214.
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