磷偏聚对IN706合金铸态组织及均匀化处理的影响

Saved in:
Bibliographic Details
Published in中国有色金属学报：英文版 Vol. 25; no. 9; pp. 2939 - 2947
Main Author 章莎 信昕 孙文儒 孙晓峰 于连旭 张玉忱 胡壮麒
Format Journal Article
LanguageEnglish
Published 2015
Subjects
IN706合金
Laves相
偏聚
磷
Online AccessGet full text
ISSN1003-6326

Cover

More Information
Bibliography:43-1239/TG
Sha ZHANG, Xin XIN, Wen-ru SUN, Xiao-feng SUN, Lian-xu YU, Yu-chen ZHANG, Zhuang-qi HU（ 1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; 2. AVIC Shenyang Liming Aero--Engine Group Corporation Ltd., Shenyang 110043, China）
phosphorus; segregation; IN706 alloy; Laves phase
The distribution of phosphorus in IN706 alloy was studied,with particular emphasis on the as-cast microstructure and homogenization treatment.It is found that phosphorus is segregated in Laves phase and markedly influences the as-cast microstructure of IN706 alloy.Phosphorus retards the formation of Laves phase with the eutectic form,but promotes the Laves formation with the blocky form.Phosphorus refines the dendritic structure and noticeably enlarges the interdendritic area.The reason for phosphorus influencing the as-cast microstructure is attributed to its extremely low solubility in γ matrix and great retarding effect on γ matrix solidification.In addition,phosphorus slightly decreases the melting temperature of Laves phase,and retards the dissolution of Laves phase and the element diffusion between dendrite core and interdendritic area during the homogenization treatment.And it is thought that phosphorus delays the homogenization process by inhibiting the element diffusion.
ISSN:1003-6326