摘要
对GH4169高温合金在Gleeble-3500热模拟实验机进行了双道次和单道次热压缩实验。分析了变形温度、应变速率、间隔保温时间、变形量和初始晶粒尺寸对GH4169高温合金静态再结晶体积分数的影响。实验结果表明:变形温度越高、应变速率越大、道次间隔时间越长,变形量越大,初始晶粒度越小,静态再结晶体积分数越大。根据实验结果,建立了GH4169高温合金的静态再结晶模型,并将所建立的模型的预测结果和实验结果进行了对比分析,二者比较吻合。
The two-pass hot compression tests and single-pass hot compression tests of superalloy GH4169 were conducted by a Gleeble-3500 thermal simulator. The effects of deformation temperature,strain rate,interval holding time,the deformation,and initial grain size on the static recrystallization volume fraction of the superalloy GH4169 were analyzed. The results show that with the higher deformation temperature,strain rate,the longer interval holding time,the greater deformation,and the smaller initial grain size,the greater volume fraction of the static recrystallization is obtained. Based on experimental results,the static recrystallization model of the superalloy GH4169 is proposed. A contrastive analysis is made between results predicted by models and experimental results. The predicted results is good.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2015年第5期217-222,共6页
Transactions of Materials and Heat Treatment
基金
国家重大科技专项(2012ZX04012011)
