Manufacturing, Microstructure, and Mechanics of 316L SS Biomaterials by Laser Powder Bed Fusion.

IF 5.2 3区医学 Q1 ENGINEERING, BIOMEDICAL

Journal of Functional Biomaterials Pub Date : 2025-07-31 DOI:10.3390/jfb16080280

Zhizhou Zhang, Paul Mativenga, Shi-Qing Huang

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Abstract

Laser powder bed fusion (LPBF) is an advanced additive manufacturing technology that is gaining increasing interest for biomedical implants because it can produce dense, patient-specific metallic components with controlled microstructures. This study investigated the LPBF fabrication of 316L stainless steel, which is widely used in orthopedic and dental implants, and examined the effects of laser power and scanning speed on the microstructure and mechanical properties relevant to biomedical applications. The study achieved 99.97% density and refined columnar and cellular austenitic grains, with optimized molten pool morphology. The optimal LPBF parameters, 190 W laser power and 700 mm/s, produced a tensile strength of 762.83 MPa and hardness of 253.07 HV_0.2, which exceeded the values of conventional cast 316L stainless steel. These results demonstrated the potential of optimized LPBF 316L stainless steel for functional biomedical applications that require high mechanical integrity and biocompatibility.

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激光粉末床融合316L SS生物材料的制备、微观结构和力学。

激光粉末床融合（LPBF）是一种先进的增材制造技术，因为它可以生产致密的、具有控制微结构的患者特定金属部件，因此在生物医学植入物中越来越受到关注。本研究研究了广泛应用于骨科和牙科种植体的316L不锈钢的LPBF制备，并研究了激光功率和扫描速度对生物医学应用相关组织和力学性能的影响。该研究获得了99.97%的密度和细化的柱状和胞状奥氏体晶粒，并优化了熔池形貌。在激光功率为190 W、速度为700 mm/s的最佳LPBF参数下，合金的抗拉强度为762.83 MPa，硬度为253.07 HV0.2，均超过了常规铸造316L不锈钢。这些结果证明了优化后的LPBF 316L不锈钢在需要高机械完整性和生物相容性的功能性生物医学应用中的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Functional Biomaterials Engineering-Biomedical Engineering

CiteScore

4.60

自引率

4.20%

发文量

226

审稿时长

11 weeks

期刊介绍： Journal of Functional Biomaterials (JFB, ISSN 2079-4983) is an international and interdisciplinary scientific journal that publishes regular research papers (articles), reviews and short communications about applications of materials for biomedical use. JFB covers subjects from chemistry, pharmacy, biology, physics over to engineering. The journal focuses on the preparation, performance and use of functional biomaterials in biomedical devices and their behaviour in physiological environments. Our aim is to encourage scientists to publish their results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Several topical special issues will be published. Scope: adhesion, adsorption, biocompatibility, biohybrid materials, bio-inert materials, biomaterials, biomedical devices, biomimetic materials, bone repair, cardiovascular devices, ceramics, composite materials, dental implants, dental materials, drug delivery systems, functional biopolymers, glasses, hyper branched polymers, molecularly imprinted polymers (MIPs), nanomedicine, nanoparticles, nanotechnology, natural materials, self-assembly smart materials, stimuli responsive materials, surface modification, tissue devices, tissue engineering, tissue-derived materials, urological devices.