Purpose This paper presents an investigation into residual stresses in selective laser sintering (SLS) and selective laser melting (SLM), aiming at a better understanding of this phenomenon. Design/methodology/approach First, the origin of residual stresses is explored and a simple theoretical model is developed to predict residual stress distributions. Next, experimental methods are used to measure the residual stress profiles in a set of test samples produced with different process parameters. Findings Residual stresses are found to be very large in SLM parts. In general, the residual stress profile consists of two zones of large tensile stresses at the top and bottom of the part, and a large zone of intermediate compressive stress in between. The most important parameters determining the magnitude and shape of the residual stress profiles are the material properties, the sample and substrate height, the laser scanning strategy and the heating conditions. Research limitations/implications All experiments were conducted on parts produced from stainless steel powder (316L) and quantitative results cannot be simply extrapolated to other materials. However, most qualitative results can still be generalized. Originality/value This paper can serve as an aid in understanding the importance of residual stresses in SLS/SLM and other additive manufacturing processes involving a localized heat input. Some of the conclusions can be used to avoid problems associated with residual stresses.

Peter Mercelis

Jean‐Pierre Kruth

Rapid Prototyping Journal

RAPID PROTOTYPING JOURNAL 专注于制造环境中的开发，但涵盖其他领域的应用，例如医学和建筑。在该领域发表的所有论文都分散在广泛的国际出版物中，没有一篇真正专门研究这一特定学科，这本期刊对于任何参与增材制造的人来说都是重要的资源。它汇集了来自世界各地杰出来源的关于增材制造各个方面的重要参考论文，为这个充满活力和令人兴奋的领域提供真正的国际视角。-基准测试-增材制造中的大规模定制认证和资格-增材制造设计-材料方面 - 工艺/应用审查 - CAD 和其他软件方面 - 现有流程的增强 - 与设计流程的集成 - 管理影响 - 新的增材制造流程 - 增材制造零件的新应用 - 用于工具的增材制造 - 医疗应用 - 与相关的逆向工程AM-增材减材混合制造-工业化

The Rapid Prototyping Journal focuses on developments in manufacturing environments while also covering applications in other fields such as medicine and architecture. All papers in this area are scattered across a wide range of international publications, and there is currently no journal dedicated specifically to this particular discipline. Therefore, this journal serves as an important resource for anyone involved in additive manufacturing. It brings together significant reference papers from distinguished sources around the world on various aspects of additive manufacturing, providing a truly international perspective on this vibrant and exciting field. The journal includes topics such as benchmarking, mass customization certification and qualification in additive manufacturing, additive manufacturing design, materials aspects, process/application reviews, CAD and other software aspects, enhancements of existing processes, integration with design processes, management impacts, new additive manufacturing processes, new applications for additive manufacturing parts, additive manufacturing for tools, medical applications, related reverse engineering, hybrid manufacturing of additive and subtractive processes, and industrialization.

《Rapid Prototyping Journal》专注于制造环境中的开发，同时也涵盖医学和建筑等其他领域的应用。该领域的所有论文分散在广泛的国际出版物中，尚无专门研究这一特定学科的期刊。因此，这本期刊对任何参与增材制造的人来说都是重要的资源。它汇集了来自世界各地杰出来源的关于增材制造各个方面的重要参考论文，为这个充满活力和令人兴奋的领域提供了真正的国际视角。期刊内容包括：基准测试、增材制造中的大规模定制认证和资格、增材制造设计、材料方面、工艺/应用审查、CAD和其他软件方面、现有流程的增强、与设计流程的集成、管理影响、新的增材制造流程、增材制造零件的新应用、用于工具的增材制造、医疗应用、与相关的逆向工程、增材减材混合制造及工业化等。

Category	Quartile
工程技术	4
工程技术, 工程机械	4
工程技术, 材料科学综合	4

Residual stresses in selective laser sintering and selective laser melting

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info

Category	Quartile
MATERIALS SCIENCE, MULTIDISCIPLINARY	2