摘要
选区激光熔化(SLM)是目前应用最广泛的金属增材制造技术之一。SLM成形零件中不可避免会产生许多缺陷,包括孔隙、表层粉末球化、裂纹等;缺陷的形成不仅会影响成形过程的顺利进行,也会破坏零件内部完整性,降低零件的服役性能。对SLM成形316L不锈钢零件中孔隙、表层粉末球化、裂纹3种缺陷的主要特征进行了综述,对这3种缺陷的形成机理和影响因素进行了总结,提出了控制缺陷的主要措施,最后给出了今后的研究方向。
Selective laser melting(SLM)is one of the most widely used metal additive manufacturing techniques.Many defects are inevitably produced in the SLM formed parts,including pores,surface layer powder spheroidization,cracks and so on.The formation of defects not only affect the smoothness of the forming process,but also damage the internal integrity of the part and reduce its serviceability.The main characteristics of three defects including pores,surface layer powder spheroidization and cracks in SLM formed 316L stainless steel parts are reviewed.The formation mechanisms and influencing factors of these three defects are summarised,and the main measures to control the defects are proposed.Finally,future research directions are put forword.
作者
丛佳琦
计云萍
王磊
康学良
李一鸣
任慧平
CONG Jiaqi;JI Yunping;WANG Lei;KANG Xueliang;LI Yiming;REN Huiping(School of Materials and Metallurgy(School of Rare Earth),Inner Mongolia University of Science and Technology,Baotou 014010,China;Collaborative Innovation Center of Integrated Exploitation of Bayan Obo Multi-Metal Resources,Inner Mongolia University of Science and Technology,Baotou 014010,China;Inner Mongolia Autonomous Region Key Laboratory of Advanced Metal Materials,Baotou 014010,China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2023年第2期1-6,共6页
Materials For Mechanical Engineering
基金
内蒙古自然科学基金资助项目(2021MS05010)。
