冷变形和热处理对Haynes 230合金晶粒度的影响  

Effects of Cold Deformation and Heat Treatment on Grain Size of Haynes 230 Alloy

作　　者：杜青山 王平 郝宪朝 卢建强 杨志豪 王隆基 DU Qingshan;WANG Ping;HAO Xianchao;LU Jianqiang;YANG Zhihao;WANG Longji(Key Laboratory of Electromagnetic Process Research of Materials of Ministry of Education,Northeastern University,Shenyang 110167;Key Laboratory of Nuclear Materials and Safety Evaluation,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110801)

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,沈阳110167 [2]中国科学院核用材料与安全评价重点实验室,中国科学院金属研究所,沈阳110801

出　　处：《特种铸造及有色合金》2024年第11期1542-1547,共6页Special Casting & Nonferrous Alloys

基　　金：中核集团领创科研资助项目(41CNNC-LCKY-202278)。

摘　　要：研究了固溶温度和冷变形对Haynes 230高温合金奥氏体晶粒长大的影响规律。对不同固溶温度和不同变形量的Haynes 230高温合金冷轧板进行了15 min的固溶处理,并测量了固溶后的奥氏体晶粒平均尺寸。利用Arrhenius公式建立了不同变形量下的Haynes 230合金奥氏体晶粒长大模型。结果表明,在相同固溶温度下,随着变形量增加,奥氏体晶粒尺寸减小;在相同变形量下,随着固溶温度升高,奥氏体晶粒尺寸增大,且呈现出先缓后急的特征。变形量分别为0、26%和58%时的奥氏体晶粒长大激活能分别为47、52和119 kJ/mol。Effects of solution temperature and cold deformation on austenite grain growth of Haynes 230 superalloy were investigated.The cold-rolled plates of Haynes 230 superalloy with different solution temperatures and deformation amounts were solution treated for 15 min,and the average austenite grain size after solution treatment was measured.A model for austenite grain growth of Haynes 230 alloy under different deformation amounts was established by Arrhenius formula.The results indicate that the austenite grain size is decreased with the increasing of deformation rate at given temperature.At given deformation rate,the austenite grain size is increased with the increasing of solution temperature,presenting characteristics of firstly slow and then acute.The activation energies of austenite grain growth under different deformation amounts are 47,52 and 119 kJ/mol.

关 键 词：镍基高温合金 固溶处理 冷变形 晶粒尺寸 显微组织 

分 类 号：TG146[一般工业技术—材料科学与工程] TG156[金属学及工艺—金属材料]