| Fe-Ni-C合金粉末选择性激光熔化成形 |
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| 引用本文： | 鲁中良,史玉升,刘锦辉,黄树槐. Fe-Ni-C合金粉末选择性激光熔化成形[J]. 华中科技大学学报(自然科学版), 2007, 35(8): 93-96 |
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| 作者姓名： | 鲁中良 史玉升 刘锦辉 黄树槐 |
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| 作者单位： | 华中科技大学,材料成形与模具技术国家重点实验室,湖北,武汉,430074;华中科技大学,材料成形与模具技术国家重点实验室,湖北,武汉,430074;华中科技大学,材料成形与模具技术国家重点实验室,湖北,武汉,430074;华中科技大学,材料成形与模具技术国家重点实验室,湖北,武汉,430074 |
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| 基金项目： | 湖北省自然科学基金 , 国家科技型中小企业技术创新基金 |
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| 摘 要： | 针对金属零件在选择性激光熔化成形过程中容易产生翘曲变形、裂纹与球化现象等问题,在理论分析与试验的基础上,探讨了其工艺参数与扫描路径对金属粉末在熔化成形中翘曲变形、裂纹与球化的影响,以及化学成分、熔池冷却速度与制件金相组织、显微硬度的关系,为选择性激光熔化技术的发展提供理论指导与实验依据.实验表明:通过合适的工艺参数与扫描路径,能够得到高致密度金属零件,金相组织均匀细小,没有出现明显翘曲变形、裂纹与球化现象.
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| 关 键 词： | 选择性激光熔化成形 工艺参数 扫描路径 金相组织 显微硬度 |
| 文章编号： | 1671-4512（2007）08-0093-04 |
| 修稿时间： | 2006-08-21 |
Selective laser melting of Fe-Ni-C alloy powders |
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| Lu Zhongliang,Shi Yusheng,Liu Jinhui,Huang Shuhuai. Selective laser melting of Fe-Ni-C alloy powders[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2007, 35(8): 93-96 |
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| Authors: | Lu Zhongliang Shi Yusheng Liu Jinhui Huang Shuhuai |
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| Affiliation: | State Laboratory of Material Processing and Die and Mould Technology, Huazhong University of Science and Technology, ,Wuhan 430074, China |
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| Abstract: | It is found to warp,crack and ball in the selective laser melting process of manufacturing metal parts.Combined theoretical analysis with experiments,effects of technology parameters and different scanning routes on warp,crack and balling phenomenon were investigated;In addition,the relations between chemistry composition,cooling rate and metallurgical structure,microhardness are analyzed for supplying theory guidance and experimental basis.The experiments show that there is no evident warp,crack and balling with appropriate technology parameters and scanning route,and the manufactured metal part has high density and minute metallurgical structure. |
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| Keywords: | selective laser melting(SLM) technology parameter scanning route metallurgical structure microhardness |
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