摘要
研究了热处理工艺对GH4720Li合金微观组织演化的影响。结果表明：GH4720Li合金在1160℃以下固溶处理时,晶粒缓慢长大,硬度先升高再下降;合金在1160℃及以上温度固溶处理时,晶粒快速长大,硬度单调下降。合金在650-760℃时效处理时,硬度持续升高;合金在850-1050℃时效处理时,硬度先升高再下降;随着时效处理时间的增加,γ＇相的尺寸增大,并出现＂方形化＂的趋势。
The influence of heat treatment processes on microstructure evolution of GH4720 Li alloy was investigated.The results indicate that,when the solution temperature is bellow 1160 ℃,the grain of GH4720 Li alloy grows slowly,the hardness of the alloy first increases and then decreases; when the solution temperature is or over 1160 ℃,the grain of the alloy grows quickly,the hardness decreases continuously.When the alloy samples are aged at 650 ℃ and 760 ℃,the hardness of the samples increases continuously.When the alloy samples are aged at range of 850 ℃ to 1050 ℃,the hardness of the samples first increases and then decreases.With the ageing treatment time increasing,the size of the γ＇ phase increases,the figure of the γ＇ phase appears the quadrate trend.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2016年第8期84-88,共5页
Transactions of Materials and Heat Treatment
基金
国家863计划重大课题(2015AA03A501)
