宋晓俊,王超渊,汪煜,周磊,邹金文

• 1:中国航发北京航空材料研究院先进高温结构材料重点实验室

摘要(Abstract)：

采用真空等温热变形试验机对挤压态镍基粉末高温合金试样(20 mm×20 mm×50 mm)进行等温应变梯度变形试验研究。在最大应变速率0.001～1 s~(-1)和变形温度1000～1100℃的条件下,所有试样最大应变处等温变形至应变1.0。结果表明:变形试样在标准过固溶处理前的典型微观组织形貌并无明显区别,只是晶粒尺寸大小略有区别;变形试样经过标准过固溶处理后,晶粒尺寸较为不均匀,晶粒之间尺寸差别较大,存在个别尺寸极大的晶粒,即在一定应变区间内出现了异常长大的晶粒,且随着最大应变速率的增大,存在异常长大晶粒的区域应变值逐渐降低,随着变形温度的升高,晶粒异常长大的程度逐渐加大。

关键词(KeyWords)： 镍基粉末高温合金;变形温度;应变速率;晶粒长大

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 宋晓俊,王超渊,汪煜,周磊,邹金文

DOI: 10.13289/j.issn.1009-6264.2020-0291

参考文献(References)：

• [1] 王淑云,李惠曲,张麦仓.FGH96合金等温变形力学性能研究[J].热加工工艺,2002(6):16-18.WANG Shu-yun,LI Hui-qu,ZHANG Mai-cang.A study of the mechanical properties of FGH96 alloy in isothermal deformation[J].Hot Working Technology,2002(6):16-18.
• [2] 王淑云,张敏聪,东赟鹏,等.FGH96合金热挤压棒材超塑性研究[J].材料工程,2012(7):24-28.WANG Shu-yun,ZHANG Min-cong,DONG Yun-peng,et al.Study on superplasticity of extruded FGH96 alloy[J].Journal of Materials Engineering,2012(7):24-28.
• [3] 邹金文,汪武祥.粉末高温合金研究进展与应用[J].航空材料学报,2006,26(3):244-250.ZOU Jin-wen,WANG Wu-xiang.Development and application of P/M superalloy[J].Journal of Aeronautical Materials,2006,26(3):244-250.
• [4] 刘建涛,张义文,陶宇,等.FGH96合金动态再结晶行为的研究[J].材料热处理学报,2006,27(5):46-50.LIU Jian-tao,ZHANG Yi-wen,TAO Yu,et al.Study on the behavior of dynamic recrystallization of FGH96 alloy[J].Transactions of Materials and Heat Treatment,2006,27(5):46-50.
• [5] Blankenship.Recrystallization and grain growth in strain gradient samples[J].Scripta Metallurgica et Materialia,1994,31(6):647-652.
• [6] Park J Y,Szpunar J A.Influence of the primary recrystallization texture on abnormal grain growth of goss grains in grain oriented electrical steel[J].Materials Science Forum,2002,408-412(1):821-826.
• [7] Lee S B,Yoon D Y,Henry M F.Abnormal grain growth and grain boundary faceting in a model Ni-base superalloy[J].Acta Materialia,2000,48:3071-3080.
• [8] Gao Y J,Jin X,Su Y Y,et al.Monte Carlo simulation of abnormal grain growth[J].Journal of Guangxi University Nature Science Edition,2009,34(2):220-225.
• [9] Huron E,SRivatsa S,Raymon E D.Control of grain size via forging strain rate limits for R′88DT[J].Superalloys,2000:49-58.
• [10] Hillert M.On the theory of normal and abnormal grain growth[J].Acta Metallurgica,1965,13:227-238.
• [11] Koo J B,Yoon D Y,Henry M F.The effect of small deformation on abnormal grain growth in bulk Cu[J].Metallurgical and Materials Transactions A,2002,33(12):3803-3811.
• [12] Rios P R.Theory for grain boundary pinning by particles[J].Acta Metallurgica,1987,35(12):2805-2814.
• [13] 郭婧,姚志浩,董建新,等.高温合金中晶粒异常长大及临界变形量研究进展[J].世界钢铁 2011(4):38-45.GUO Jing,YAO Zhi-hao,DONG Jian-xin,et al.Progress in research of abnormal grain growth and critical deformation in superalloys[J].World Iron and Steel,2011(4):38-45.
• [14] Maazi N,Penelle R.Introduction of preferential Zener drag effect in Monte Carlo simulation of abnormal Goss grain growth in the Fe-3%Si magnetic alloys[J].Materials Science and Engineering A,2009,504:135-140.
• [15] 吕炎,曲万贵,陈宗霖.临界变形粗晶形成机理的探讨[J].金属学报,1986,22(6):489-493.Lü Yan,QU Wan-gui,CHEN Zong-lin.An approach to mechanism of coarse grain formation after critical deformation[J].Acta Metallurgica Sinica,1986,22(6):489-493.

文章评论(Comment)：