激光增材制造低合金超高强度钢的组织与力学性能研究进展  

Research Process of Microstructure and Mechanical Properties of Laser Additive Manufactured Low Alloy Ultra-High Strength Steel

作　　者：刘丰刚 张文军 刘奋成 黄春平 郑海忠 郑永生 LIU Fenggang;ZHANG Wenjun;LIU Fencheng;HUANG Chunping;ZHENG Haizhong;ZHENG Yongsheng(National Defence Key Disciplines Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]南昌航空大学轻合金加工科学与技术国防重点学科实验室,南昌330063

出　　处：《航空制造技术》2022年第1期77-85,共9页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金地区基金(51865036,52165050);江西省自然科学基金面上项目(20202BABL204039,20192ACBL21050);国防重点学科实验室开放基金(EG201903448);南昌航空大学研究生创新专项资金(YC2020-017);江西省微小航空发动机重点实验室开放基金(Ef202103434)。

摘　　要：激光增材制造技术可以实现超高强度钢大型复杂关键重载构件的高性能精确成形,同时还可用于损伤零件的快速修复,在航空航天等领域的应用日益广泛。介绍了激光增材制造低合金超高强度钢的成形特性,评述了激光增材制造过程中热累积对低合金超高强度钢显微组织的影响规律,探讨了显微组织和热处理对激光增材制造低合金超高强度钢力学性能的作用机理,简述了激光增材制造在超高强度钢修复方面的应用,并对激光增材制造超高强度钢的发展趋势进行了预测。Laser additive manufacturing(LAM)technology can achieve the large-complex components of ultra-high strength steel with high performance,and can also be used for rapid repairing the damaged parts,which is widely used in aerospace and other fields.This paper introduces the forming characteristics of laser additive manufactured low alloy high strength steel,and the influence of the heat accumulated on the microstructure of the LAMed low alloy high strength steel.The mechanism of the microstructure and heat treatment on mechanical properties of LAMed low alloy high strength steel and the application of LAM in repairing ultra-high strength steel are described.The development trends of LAM ultra-high strength steel are prospected.

关 键 词：激光增材制造(LAM) 低合金超高强度钢 微观组织 热处理 力学性能 

分 类 号：V252[一般工业技术—材料科学与工程]