1. Heilongjiang University of Science and Technology, Harbin 150022, China; 2. Taizhou Vocational College of Science & Technology, Taizhou 318020, China
Abstract：Component ratio is a core parameter in the formulation design of composites and has a significant influence on the main mechanical properties of 316L stainless steel/polyethersulfone (PES) composite parts fabricated by selective laser sintering. In this paper, a simplified three-dimensional powder-bed model was established using ANSYS Workbench to numerically simulate the selective laser sintering forming process of 316L stainless steel/PES composites with five different component ratios (φ316L=0, 9.1%, 16.7%, 28.6%, 33.3%). The effects of component ratio on residual stress, tensile stress, and bending stress were analyzed, and tensile and bending tests were performed on the composites using an electronic universal testing machine. Numerical simulation results show that when φ316L is in the range of 16.7%-28.6%, the maximum residual stress of the parts is minimized and the residual stress distribution uniformity is optimal. The maximum tensile stress of the part with φ316L=28.6% is significantly higher than that of the other groups, reaching 3.7 MPa. Meanwhile, the part with φ316L=16.7%, the maximum bending stress is 36.2 MPa with no obvious local stress concentration. Experimental results indicate that the tensile strength reaches the highest value of 3.9 MPa at φ316L=28.6%, while the bending strength peaks at 36.5 MPa at φ316L=16.7%. The experimental results are consistent with the trends of numerical simulations, verifying the reliability and accuracy of the numerical simulation method. Considering both tensile and bending properties comprehensively, the recommended volume fraction of 316L stainless steel in the composite is 16.7%- 28.6%, which can be selected according to the emphasis on tensile or bending performance in practical applications. This study clarifies the optimal ratio range and the variation law of mechanical properties for 316L stainless steel/PES composites, providing a theoretical basis and data support for the formulation optimization and mechanical property improvement of selective laser sintered 316L stainless steel/PES composite parts.
[1] 郭帅. 木质纤维素/酚醛树脂复合材料激光烧结成型及碳化工艺与机理研究[D]. 哈尔滨: 东北林业大学, 2024. GUO Shuai.Study on the laser sintering formation and carbonization of wood cellulose/phenolic resin composites: process and mechanism[D]. Harbin: Northeast Forestry University, 2024. [2] ZHANG H Y, DONG D K, SU S P, et al.Experimental study of effect of post processing on fracture toughness and fatigue crack growth performance of selective laser melting Ti-6Al-4V[J]. Chinese Journal of Aeronautics, 2019, 32(10): 2383-2393. [3] WANG D, WANG Y M, YANG Y Q, et al.Research on design optimization and manufacturing of coating pipes for automobile seal based on selective laser melting[J]. Journal of Materials Processing Technology, 2019, 273: 116227. [4] KAMBOJ N, RESSLER A, HUSSAINOVA I.Bioactive ceramic scaffolds for bone tissue engineering by powder bed selective laser processing: a review[J]. Materials, 2021, 14(18): 5338. [5] YANG L, TANG S Y, FAN Z T, et al.Rapid casting technology based on selective laser sintering[J]. China Foundry, 2021, 18(4): 296-306. [6] 杨永强, 叶梓恒, 王迪, 等. 3D打印设备国内产业化可行性分析[J]. 新材料产业, 2013(8): 13-20. YANG Yongqiang, YE Ziheng, WANG Di, et al.Feasibility analysis of domestic industrialization of 3D printing equipment[J]. Advanced Materials Industry, 2013(8): 13-20. [7] 曲芳, 翟秦, 袁凯, 等. 煤矸石/PES复合材料选区激光烧结工艺参数数值模拟[J]. 粉末冶金材料科学与工程, 2024, 29(1): 1-10. QU Fang, ZHAI Qin, YUAN Kai, et al.Numerical simulation of process parameters for selective laser sintering of coal gangue/PES composite materials[J]. Materials Science and Engineering of Powder Metallurgy, 2024, 29(1): 1-10. [8] 周伟赵, 郜晗. 3D打印技术在汽车试制中的应用[J]. 企业科技与发展, 2022(4): 97-99. ZHOU Weizhao, GAO Han.Application of 3D printing technology in automobile trial production[J]. Sci-Tech & Development of Enterprise, 2022(4): 97-99. [9] 杨振英, 于博. 3D打印在汽车塑料件设计中的应用与研究进展[J]. 塑料工业, 2017, 45(5): 11-15. YANG Zhenying, YU Bo.Application and research progress of 3D printing in the design of automotive plastic parts design[J]. China Plastics Industry, 2017, 45(5): 11-15. [10] 申超, 全斌义, 雷振华. 3D打印在汽车零部件中的应用[J]. 时代汽车, 2019(3): 143-145. SHEN Chao, QUAN Binyi, LEI Zhenhua.Application of 3D printing in automotive components[J]. Auto Time, 2019(3): 143-145. [11] 胡海霞, 刘咏, 黄千里. 制备工艺对粉末冶金FeCrNi中熵合金耐腐蚀性能的影响[J]. 粉末冶金材料科学与工程, 2023, 28(5): 490-499. HU Haixia, LIU Yong, HUANG Qianli.Effect of preparation process on corrosion resistance properties of powder metallurgy FeCrNi medium entropy alloy[J]. Materials Science and Engineering of Powder Metallurgy, 2023, 28(5): 490-499. [12] 马廷昂. 基于核桃壳复合粉末体系建模与数值模拟研究[D]. 大庆: 东北石油大学, 2024. MA Ting’ang.Research on modeling and numerical simulation of walnut shell composite powder system[D]. Daqing: Northeast Petroleum University, 2024. [13] 彭石翊测. 聚合物粉末颗粒激光烧结过程热质传递行为数值研究[D]. 长沙: 中南大学, 2024. PENG Shiyice.Numerical study on heat and mass transfer behavior of polymer powder particles during laser sintering[D]. Changsha: Central South University, 2024. [14] 陈晖, 李燃, 徐海峰, 等. 选择性激光烧结PES/PTW复合材料的性能研究[J]. 现代塑料加工应用, 2025, 37(3): 1-4. CHEN Hui, LI Ran, XU Haifeng, et al.Study on properties of PES/PTW composite through selective laser sintering[J]. Modern Plastics Processing and Applications, 2025, 37(3): 1-4.
2026, Vol. 31 
