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论文类型：期刊论文

发表时间：2016-08-12

发表刊物：MATERIALS SCIENCE AND TECHNOLOGY

收录刊物：SCIE、EI、Scopus

卷号：32

期号：12

页面范围：1223-1230

ISSN号：0267-0836

关键字：Laser engineered net shaping; Additive manufacturing; Laser scanning path; Microstructure; Mechanical properties

摘要：In the present study, laser engineered net shaping technology was successfully utilised to fabricate 316L stainless steel bulk specimens using unidirectional scanning path and weaving scanning path. Influence of scanning path and post-heat treatment on microstructural and mechanical properties of the as-deposited builds has been investigated. The results show that scanning paths have a significant impact on the grain morphology evolution. Consequently, the as-made samples by different scanning strategies show a great difference in the mechanical properties. Furthermore, the experimental results also demonstrate that post-heat treatment is an essential step in further optimising microstructure and improving mechanical properties.