镍基高温合金GH3536带箔材的再结晶与晶粒长大行为  

Recrystallization and Grain Growth Behavior for Strip and Foil of Ni-based Superalloy GH3536

作　　者：王昊 崔君军[1,2] 赵明久 WANG Hao;CUI Junjun;ZHAO Mingjiu(CAS Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China)

机构地区：[1]中国科学院金属研究所中国科学院核用材料与安全评价重点实验室,沈阳110016 [2]中国科学技术大学材料科学与工程学院,沈阳110016

出　　处：《材料研究学报》2023年第7期535-542,共8页Chinese Journal of Materials Research

基　　金：国家自然科学基金委员会与中国工程物理研究院联合基金(U1730140)。

摘　　要：用光学显微镜(OM)、扫描电镜(SEM)及X射线衍射分析(XRD)等手段表征不同厚度的冷轧态GH3536微米尺度带箔材退火后的显微组织和结构特征,研究这种材料的再结晶和晶粒长大的规律。结果表明,冷轧变形后的GH3536带箔材的晶粒组织呈线条状,其主相为γ相;建立了厚度为200、100和50μm的GH3536带箔材在1050~1150℃退火10~60 min的晶粒长大方程,得到晶粒长大的激活能分别为Q_(200μm)=800.34 kJ/mol,Q_(100μm)=609.50 kJ/mol,Q_(50μm)=314.79 kJ/mol。厚度较小的GH3536带箔材其晶粒长大激活能也较小,晶粒更容易长大。影响晶粒长大的因素与变形程度和析出相颗粒有关。The microstructure and crystallographic structure characteristics of as cold-rolled strip and foil with different thicknesses of GH3536 alloy after annealing was investigated by optical microscope(OM),scanning electron microscope(SEM),transmission electron microscope(TEM)and X-ray diffractometer(XRD)to get an insight into the recrystallization and grain growth behavior.The results show that the cold rolled strip and foil of GH3536 alloy show a microstructure composed of elongated grains along the rolling directions,and its main phase wasγ.The grain growth equations of the strip and foil with thicknesses of 200,100 and 50μm annealed at 1050~1150℃for 10~60 min were established respectively,and the relevant activation energies were acquired as follows:Q_(200μm)=800.34 kJ/mol,Q_(100μm)=609.50 kJ/mol and Q_(50μm)=314.79 kJ/mol.The activation energy of the thinner strip and foil was smaller,and the grain growth was more prone to occur.The main factors affecting the grain growth were related to deformation degree and precipitated particles.

关 键 词：金属材料 镍基高温合金 带箔材 再结晶 晶粒长大行为 

分 类 号：TG132.32[一般工业技术—材料科学与工程]