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材料工程  2020, Vol. 48 Issue (10): 105-113    DOI: 10.11868/j.issn.1001-4381.2019.001031
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
扫描策略对激光选区熔化成型18Ni300马氏体时效钢打印质量和性能的影响
张佳琪1, 王敏杰1, 刘建业2, 牛留辉2, 王金海2
1. 大连理工大学 机械工程学院, 辽宁 大连 116024;
2. 广东汉邦激光科技有限公司, 广东 中山 528427
Influence of scanning strategy on printing quality and properties of selective laser melted 18Ni300 maraging steel
ZHANG Jia-qi1, WANG Min-jie1, LIU Jian-ye2, NIU Liu-hui2, WANG Jin-hai2
1. School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China;
2. Guangdong Hanbang 3D Tech Co., Ltd., Zhongshan 528427, Guangdong, China
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摘要 为研究扫描策略对成型零件打印质量和性能的影响规律,采用激光选区熔化(selective laser melting,SLM)技术,选用单向填充重复扫描策略(X扫描)、90°交替变向填充扫描策略(XY扫描)、条形分区变向填充扫描策略(S扫描)和棋盘格分区变向填充扫描策略(C扫描)打印18Ni300马氏体时效钢,系统地研究不同扫描策略对打印零件表面形貌、致密度、组织物相和力学性能的影响规律,分析不同扫描策略拉伸性能在不同成型方向上的各向异性。结果表明:分区扫描策略的打印质量和性能优于X扫描策略和XY扫描策略。究其原因在于,在打印过程中分区扫描策略可将打印表面划分成多个区域进行加工,提高了每一层的冷却凝固速率。相比于X扫描策略和XY扫描策略,分区扫描策略的扫描方向呈周期性变化,不仅有利于填补上一层熔道的凸起和搭接孔隙,而且可以减少热量积累,有利于提高试样性能。
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张佳琪
王敏杰
刘建业
牛留辉
王金海
关键词 激光选区熔化扫描策略18Ni300马氏体时效钢打印质量分区扫描    
Abstract:In order to study the influence of scanning strategy on the printing quality and properties of the formed parts,unidirectional scanning along one axis (X-scan),unidirectional scanning with 90° rotation in each layer (XY-scan),strip partition scanning strategy with direction changes in each layer (S-scan), checkerboard partition scanning strategy with direction changes in each layer (C-scan) were chosen to print 18Ni300 maraging steel by selective laser melting (SLM) process.The effects of different scanning strategies on the surface morphology, relative density,microstructure and mechanical properties of printed parts were studied systematically. The anisotropy of tensile properties of different scanning strategies in different forming directions was analyzed. The results show that the print quality and properties of the partition scanning strategies are better than that of X scanning strategy and XY scanning strategy. The reason is that during the printing process, the partition scanning strategy can divide each layer of laser scanning into multiple areas for printing, which improves the condensing rate for each layer. Compared with X scanning strategy and XY scanning strategy, the scanning direction of the partition scanning strategy changes periodically, which not only helps to fill the bulge and lap gap of the upper layer, but also reduces the heat accumulation and improves the performance of the sample.
Key wordsselective laser melting    scanning strategy    18Ni300 maraging steel    printing quality    partition scan
收稿日期: 2019-11-13      出版日期: 2020-10-17
中图分类号:  TG665  
通讯作者: 王敏杰(1958-),男,教授,博士,博士研究生导师,主要从事模具设计制造及其计算机辅助技术、高精高速切削理论与数控加工技术、聚合物材料成型技术等方面的研究,联系地址:辽宁省大连市甘井子区凌工路2号大连理工大学模具研究所(116024),E-mail:mjwang@dlut.edu.cn     E-mail: mjwang@dlut.edu.cn
引用本文:   
张佳琪, 王敏杰, 刘建业, 牛留辉, 王金海. 扫描策略对激光选区熔化成型18Ni300马氏体时效钢打印质量和性能的影响[J]. 材料工程, 2020, 48(10): 105-113.
ZHANG Jia-qi, WANG Min-jie, LIU Jian-ye, NIU Liu-hui, WANG Jin-hai. Influence of scanning strategy on printing quality and properties of selective laser melted 18Ni300 maraging steel. Journal of Materials Engineering, 2020, 48(10): 105-113.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.001031      或      http://jme.biam.ac.cn/CN/Y2020/V48/I10/105
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