摘要
利用SLM技术制备CuSn10合金试样,研究了SLM工艺参数对试样致密度的影响,以及热处理对CuSn10合金微观组织和力学性能的影响。结果表明:当激光功率为195 W、扫描速度为550 mm/s、扫描间距为0.08mm、层厚为0.02mm时,CuSn10合金试样的致密度达到99.8%;SLM成形试样的显微组织包括α-Cu相、亚稳相β’(Cu_(13.7)Sn)和微量的δ相(Cu_(41)Sn_(11))。SLM成形试样经过热处理后,亚稳相β’相受热扩散分解,微观组织更加均匀,最终组织由α-Cu相和微量δ相构成。SLM成形CuSn10合金热处理后优异的综合性能丰富了其应用领域,提高了材料的使用价值。
CuSn10 alloy samples were prepared using SLM technology.The effects of SLM process parameters on the denensiicity of the sample and the heat treatment on the microorganization and mechanical properties of CuSn10 alloy were investigated.The results show that when the laser power is 195 W,the scanning speed is 550 mm/s,the scanning distance is 0.08 mm,and the layer thickness is 0.02 mm,the density of the alloy sample reaches 99.8%.The microstructure of SLM formed sample includes α-Cu phase and metastable phase β’(Cu_(13.7)Sn) and trace δ phase(Cu_(41)Sn_(11)).After the heat treatment of SLM forming samples,the metastable β’phase is resolved by thermal diffusion,the microstructure is more homogeneous,and the final structure is composed of α-Cu phase and trace δ phase.The excellent comprehensive performance of SLM formed CuSn10 alloy enriches its application field and improves the use value of materials.
作者
刘斌
路声宇
李忠华
蒯泽宙
陈彦磊
LIU Bin;LU Shengyu;LI Zhonghua;KUAI Zezhou;CHEN Yanlei(School of Materials Science and Engineering,North University of China,Taiyuan 030051,China;School of Mechanical Engineering,North University of China,Taiyuan 030051,China)
出处
《热加工工艺》
北大核心
2022年第4期121-125,共5页
Hot Working Technology
基金
国家自然科学基金面上项目(52075502)
国家自然科学基金青年科学基金项目(51905497)
山西省高等学校科技创新项目(2019L0559)
中北大学青年学术带头人支持计划资助项目(QX201902)。
关键词
CuSn10合金
选区激光熔化
热处理
显微组织
力学性能
CuSn10 alloy
selective laser melting(SLM)
heat treatment
microstructure
mechanical properties
