摘要
为获得结构致密的CuCrZr合金部件,通过响应曲面和方差分析相结合的方法,探究选区激光熔化主要成形工艺参数(激光功率、扫描速度、扫描间距和铺粉层厚)对合金化CuCrZr粉末成形致密度的影响规律,并对其显微组织、物相和力学性能展开分析。结果显示:激光功率是最主要的影响因素,增大激光功率可显著提高成形致密度;在铺粉层厚0.02 mm,激光功率170 W,扫描速度300 mm/s,扫描间距0.04 mm的工艺组合下,获得最高致密度为96.8%。在此工艺下成形出的CuCrZr合金试样屈服强度为(176.7±2.1) MPa,抗拉强度为(244.7±1.2) MPa,延伸率为29.4%±0.9%。
In order to obtain dense CuCrZr alloy parts, the main forming parameters of SLM process, such as laser power, scanning speed, scanning distance, and powder spreading, were explored in the present study. At the same time, the microstructures, phases and mechanical properties of CuCrZr alloy samples were investigated. The research results showed that the laser power was the most important influence factor. Increasing the laser power could significantly increase the density of the SLMed parts. The highest density of 96.8% can be obtained under the process combination of powder layer thickness of 0.02 mm, laser power of 170 W, scanning speed of 300 mm/s, and hatching space of 0.04 mm. The yield strength of the sample was(176.7±2.1) MPa, the tensile strength was(244.7±1.2) MPa, and the elongation was 29.4%±0.9%.
作者
周吉强
黄玉山
佟鑫
杨俊杰
王小健
Zhou Jiqiang;Huang Yushan;Tong Xin;Yang Junjie;Wang Xiaojian(Institute of Advanced Wear&Corrosion Resistant and Functional Materials,Jinan University,GuangZhou»Guangdong 510630,China;School of Information and Optoelectronic Science and Engineering,South China Normal University,GuangZhou,Guangdong 510006,China)
出处
《应用激光》
CSCD
北大核心
2022年第3期43-52,共10页
Applied Laser
基金
广东省自然科学基金面上项目(2021A1515011666)
中央高校基本科研业务费专项(No 21620110)
广东省普通高校重点领域专项(No 2020ZDZX2024)
广东省企业科技特派员研发项目(No GDKTP2020036000)。
