汪常亮,李峰,陈福文,常辉,周廉.TC4-Fe合金连续升温过程的相变研究[J].稀有金属材料与工程,2019,48(12):3917~3923.[Changliang Wang,Feng Li,Fuwen Chen,Hui Chang,Lian Zhou.Phase transformation of TC4-Fe alloy during continuous heating process[J].Rare Metal Materials and Engineering,2019,48(12):3917~3923.]
TC4-Fe合金连续升温过程的相变研究
投稿时间:2019-03-21  修订日期:2019-05-14
中文关键词:  Ti6Al4V-0.55Fe  连续升温  相变  组织演化
基金项目:国家自然科学基金资助(项目号:51401015),国防基础科研计划(JCKY2018414C020)
中文摘要:
      通过连续升温热膨胀法(DIL)研究了Ti6Al4V-0.55Fe合金在连续升温过程中的α相回溶(α+β→β)的热膨胀行为和显微组织演化。本文采用了1、5、10、15 K/min的四种升温速率对Ti6Al4V-0.55Fe合金进行热膨胀实验,结果发现:不同升温速率的α相回溶曲线都展现出典型的“S”型曲线,表明α相回溶是一种由形核长大控制的过程。通过Kissinger-Akahira-Sunose(KAS)方法和Kolmogorov-Johnson-Mehl-Avrami(KJMA)模型分别得到α相回溶转变平均相变激活能E和随着α相回溶体积的增大所对应的Avrami指数n,可分为三个阶段,即相变初期(0
Phase transformation of TC4-Fe alloy during continuous heating process
英文关键词:Ti6Al4V-0.55Fe  Continuous heating process  Phase transformation  Microstructure evolution
英文摘要:
      The dilatometry behavior and microstructure of the α+β→β phase transformation in the Ti6Al4V-0.55Fe alloy were investigated during continuous heating process. Four heating rates (1, 5, 10, 15 K/min) are been applied for the dilatometry behavior research. For the α+β→β phase transformation curve, the S-shaped pattern under the different heating rates indicates that the α+β→β phase transformation is a nucleation-growth-controlled process. The mean phase transition activation energy E was obtained by the Kissinger-Akahira-Sunose (KAS) method equals to 200 kJ/mol. By calculating the corresponding Avrami index n with the increase of the β phase volume under the Kolmogorov-Johnson-Mehl-Avrami (KJMA) model, we can divide the Avrami index n into three stages which including the initial phase transformation stage (0
作者单位E-mail
汪常亮 南京工业大学新材料研究院/材料科学与工程学院 liangchangwang@njtech.edu.cn 
李峰 南京工业大学新材料研究院/材料科学与工程学院 fli@njtech.edu.cn 
陈福文 南京工业大学新材料研究院/材料科学与工程学院  
常辉 南京工业大学新材料研究院/材料科学与工程学院  
周廉 南京工业大学新材料研究院/材料科学与工程学院  
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