O含量对激光增材制造12CrNi2合金钢组织结构及力学性能的影响  

Effect of O Content on Microstructure and Mechanical Property of 12CrNi2 Alloy Steel Prepared by Laser Additive Manufacturing

作　　者：董志宏[1] 亢红伟 谢玉江[1] 迟长泰 彭晓 Dong Zhihong1 , Kang Hongwei2 , Xie Yujiang1 , Chi Changtai1 , Peng Xiao3(1 Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China; ZCollegeof Material Science and Engineering, University of Science and Technology of China, He f ei , Anhui 230026, China; 3 School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, Jiangxi 330063, Chin)

机构地区：[1]中国科学院金属研究所金属腐蚀与防护实验室,辽宁沈阳110016 [2]中国科学技术大学材料科学与工程学院,安徽合肥230026 [3]南昌航空大学材料科学与工程学院,江西南昌330063

出　　处：《应用激光》2018年第1期1-6,共6页Applied Laser

基　　金：国家重点研发计划资助项目(项目编号:2016YFB1100203)

摘　　要：对两种不同O含量(5 300ppm和350ppm)的12CrNi2合金钢粉末进行了激光增材制造(LAM)成形,发现低O含量合金钢粉成形后抑制了孔洞及氧化物夹杂形成,导致合金钢抗拉强度和延伸率明显提高。12CrNi2 alloy steels were manufactured by laser additive manufacturing （LAM）technology, using two types of powders with different O contents （5 300 ppm and 350 ppm）. It was found that the formation of low O content steel powder suppressed the for- mation of holes and oxide inclusions, resulting in significantly increased tensile strength and elongation of alloy steel.

关 键 词：激光增材制造 12CrNi2合金钢 O含量 显微组织 抗拉强度 

分 类 号：TG142.1[一般工业技术—材料科学与工程]