航空轴锻件用Maraging250钢热挤压成形数值模拟及组织性能  

Hot extrusion forming numerical simulation and microstructure and properties of Maraging250 steel for aviation shaft forging

作　　者：王春旭[1] 尚丽梅 韩顺[1] 厉勇[1] 刘东[2] 王建国[2] 杨超 WANG Chun-xu;SHANG Li-mei;HAN Shun;LI Yong;LIU Dong;WANG Jian-guo;YANG Chao(Institute of Special Steels,Central Iron and Steel Research Institute,Beijing 100081,China;School of Materials Science and Engineering,Northwest Polytechnical University,Xi’an 710072,China;AECC Commercial Aircraft engine Co Ltd,Shanghai 200241,China)

机构地区：[1]钢铁研究总院特殊钢研究所,北京100081 [2]西北工业大学材料学院,陕西西安710072 [3]中国航发商用航空发动机有限责任公司,上海200241

出　　处：《材料热处理学报》2021年第6期181-187,共7页Transactions of Materials and Heat Treatment

基　　金：国家重大科技专项(2016YFB0300104)。

摘　　要：采用DEFORM-2D软件对航空轴锻件用Maraging250钢的热挤压过程进行数值模拟,分析了其在挤压过程中温度场、等效应变场和应力场等的分布规律,并对其挤压后的微观组织和力学性能进行了分析。结果表明:热挤压成形后,锻件的温度沿径向向外表面呈升高的趋势;锻件主体区域等效应变为1.0~1.5,温度在1135~1174℃之间,锻件的温度分布和应变分布较均匀;锻件各部位的组织和力学性能具有良好的均匀性,其主体的平均晶粒尺寸为41.42~61.07μm。DEFORM-2 D software was used to simulate the hot extrusion process of maraging250 steel for aviation shaft forgings,the distribution of temperature field,equivalent strain field and stress field during the extrusion were analyzed,and microstructure and mechanical properties of the forgings after extrusion were analyzed.The results show that after hot extrusion forming,the temperature of the forgings along the radial direction to the outer surface increases,the equivalent strain of the forgings is 1.0-1.5,and the temperature is between 1135-1174℃,which shows the temperature distribution and strain distribution of the forgings are uniform.The microstructure and mechanical properties of the forgings have good uniformity,and the average grain size is 41.42-61.07μm.

关 键 词：Maraging250钢 数值模拟 热挤压 温度 等效应变 微观组织 

分 类 号：TG142.2[一般工业技术—材料科学与工程]