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CX合金钢选区激光熔化工艺及性能研究
Study on Selective Laser Melting Process and Mechanical Property of CX Alloy Steel
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- DOI:
- 作者:
- 吕广明，李玉发，郭少帅，王 晨，唐洪奎，赖运金，王庆相，梁书锦
LYU Guangming, LI Yufa, GUO Shaoshuai, WANG Chen, TANG Hongkui, LAI Yunjin, WANG Qingxiang, LIANG Sh
- 作者单位:
- 西安欧中材料科技有限公司 西安市 3D 打印用金属粉末材料工程技术研究中心，陕西 西安 710018
Sino-Euro Materials Technologies of Xi’an Co., Ltd., Xi’an 3D Printing Metal Powder Materials Engineering Technology Research Center, Xi’an 710018, China
- 关键词:
- CX 合金钢；选区激光熔化；显微组织；力学性能
CX alloy steel; selective laser melting (SLM); microstructure; mechanical properties
- 摘要:
- 为了研究 CX 合金钢选区激光熔化（SLM）成形工艺参数及性能，通过改变激光功率及扫描速度，研究了不
同工艺参数对 SLM 成形组织及力学性能的影响规律。 结果表明，随着激光功率逐渐增大，沉积态试样孔隙率先减小后
增大，试样相对密度先增大后减小，而试样力学性能先增大后减小。 激光功率 300 W、扫描速度 950 mm/s 时，试样孔隙
率为 0.012 %，相对密度为 99.84 %；抗拉强度为 1 135 MPa，屈服强度为 1 005 MPa，伸长率为 19.3 %。
Effect of microstructure and mechanical properties of CX alloy steel made by Selective Laser Melting （SLM） with different laser powers and scanning speed was studied. The results showed that porosity and relative density of the CX alloy steel first decreased, and then increased with the increase of laser power. Mechanical properties of the CX alloy steel first increased, and then decreased with laser power increased; The best process window is that laser power at 300 W and scanning speed at 950 mm/s, respectively; the responding porosity, relative density, ultimate strength, yield strength and elongation was 0.012%, 99.84%, 1 135 MPa, 1 005 MPa and 19.3%, respectively .