Impact of applied loads on wear mechanisms in H13 steel at various preheating temperatures during laser powder bed fusion additive manufacturing

IF 5.3 1区 工程技术 Q1 ENGINEERING, MECHANICAL
Wear Pub Date : 2024-08-10 DOI:10.1016/j.wear.2024.205538
Huajing Zong , Nan Kang , Mohamed El Mansori
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引用次数: 0

Abstract

In laser powder bed fusion (LPBF), processed H13 tooling has a broad application prospect in the mold and die industry. In practice, however, it is often impossible to obtain hot wear resistance and compressive residual stresses which constrain its development, affecting hence the wear performance and service life. Under these conditions, substrate preheating is an effective way to reduce thermal stress and defects of H13 for tooling applications. This research paper emphasizes the main characteristics of preheating temperature and its chief induced properties on microstructure and wear behavior of LPBF-processed H13 steel. The elevated preheating temperature altered the microstructure, increasing hardness and wear resistance. Under low applied loads, better wear resistance was attributed to high hardness and tribo-oxide layer formation. Whereas under high applied loads, it was dominated by the increased hardness due to strain hardening.

激光粉末床熔融增材制造过程中不同预热温度下施加载荷对 H13 钢磨损机制的影响
在激光粉末床熔融技术(LPBF)中,经过加工的 H13 模具在模具工业中有着广阔的应用前景。但在实际应用中,通常无法获得热耐磨性,压缩残余应力也制约了其发展,从而影响了磨损性能和使用寿命。在这种情况下,基底预热是减少 H13 在模具应用中的热应力和缺陷的有效方法。本研究论文强调了预热温度的主要特点及其对 LPBF 加工 H13 钢微观结构和磨损行为的主要诱导特性。预热温度的升高改变了微观结构,提高了硬度和耐磨性。在低负荷下,高硬度和三氧化层的形成提高了耐磨性。而在高载荷下,则主要是应变硬化导致硬度增加。
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来源期刊
Wear
Wear 工程技术-材料科学:综合
CiteScore
8.80
自引率
8.00%
发文量
280
审稿时长
47 days
期刊介绍: Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.
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