Quick Search:       Advanced Search
褚楚、、,徐严谨、、,韩宝帅、、,孟宪宇,骆良顺,侯红亮、、,苏彦庆,郭景杰,傅恒志.Fe对Nb-16Si-22Ti-2Cr-2Al-2Hf合金组织与高温压缩性能影响研究[J].稀有金属材料与工程(英文),2018,47(1):139~145.[Chu Chu,Xu Yanjin,Han Baoshuai,Meng Xianyu,Luo Liangshun,Hou Hongliang,Su Yaning,Guo Jingjie and Fu Hengzhi.Effects of Fe on Microstructures and High-Temperature Compressive Mechanical Properties of Nb-16Si-22Ti-2Cr-2Al-2Hf Based Alloy[J].Rare Metal Materials and Engineering,2018,47(1):139~145.]
Effects of Fe on Microstructures and High-Temperature Compressive Mechanical Properties of Nb-16Si-22Ti-2Cr-2Al-2Hf Based Alloy
Download Pdf  View/Add Comment  Download reader
Received:November 07, 2016  Revised:December 14, 2016
DOI:
Key words: Nb-Si  based alloy,Nbss,Silicide  phase,High  temperature compression,Mechanical  properties
Foundation item:国家自然科学基金资助(项目号5140051854, 51425402, 51331005)
Author NameAffiliation
Chu Chu,Xu Yanjin,Han Baoshuai,Meng Xianyu,Luo Liangshun,Hou Hongliang,Su Yaning,Guo Jingjie and Fu Hengzhi  
Hits: 13
Download times: 
Abstract:
      Four kinds of multiphase refractory Nb-16Si-22Ti-2Cr-2Al-2Hf-xFe(x=0,1,2,3)alloys were prepared by vacuum arc melting. XRD analysis reveals that the composites consist of Nb solid solution(Nbss), intermetallics Nb3Si and Nb5Si3 phase. The addition of Fe promotes the eutectic reaction L→Nbss+Nb5Si3, which changes the phases of alloy phases from Nbss + Nb3Si to Nbss + Nb5Si3.The volume fraction of ductile phase Nbss increases with increasing of Fe addition, leading to the reduction of compressive strength. Meanwhile, temperature and strain rate also have important influence on compressive strength of the alloys. The addition of Fe element makes Nb-Si based superalloy have better high temperature plastic deformation ability, which is of great significance to improve the hot workability of Nb-Si alloy.