The study of hot deformation on laser cladding remanufactured 316L stainless steel

Laser cladding deposition (LCD) is widely used to remanufacture/repair workpieces because of its high design freedom to rebuild areas of damage. However, the process often introduces a columnar grain structure in the cladding layer, resulting in a large variation of microstructure and hardness acros...

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Autores principales:	Yuehan Liu, Yaping Wang, Xin Xu, Christopher Hopper, Hongbiao Dong, Xingtao Wang, Hongbin Zhu, Jun Jiang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Laser cladding remanufacturing 316L stainless steel Hot deformation Mechanical properties Interfacial microstructure evolution Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/abc2f1da421245048f0de6538e45e802
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spelling	oai:doaj.org-article:abc2f1da421245048f0de6538e45e8022021-11-26T04:23:54ZThe study of hot deformation on laser cladding remanufactured 316L stainless steel0264-127510.1016/j.matdes.2021.110255https://doaj.org/article/abc2f1da421245048f0de6538e45e8022021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0264127521008108https://doaj.org/toc/0264-1275Laser cladding deposition (LCD) is widely used to remanufacture/repair workpieces because of its high design freedom to rebuild areas of damage. However, the process often introduces a columnar grain structure in the cladding layer, resulting in a large variation of microstructure and hardness across the cladding layer, welding interface, and base metal. Under fatigue and tensile loading, fractures can initiate in the lower hardness cladding layer. This study explores the feasibility of a new hybrid remanufacturing method integrating the LCD with a subsequent hot deformation process to refine grain structures, reduce hardness variations, and enhance mechanical properties. The effects of deformation temperatures and imposed plastic strains were studied by examining the microstructural and stress–strain behaviour of laser cladded 316L stainless steel. After LCD, compressive deformation was imposed at temperatures of 900 and 1100 °C, with engineering strain levels of 0.1 and 0.5. A high-quality metallurgical joint was achieved, with the optimal ultimate tensile strength and yield strength under process conditions of an engineering strain level of 0.5 imposed at 900 °C (35% improvement compared to the directly laser cladding remanufacturing process). Dynamic recrystallization process was observed by the electron back scatter diffraction technique to reveal the underlying mechanism.Yuehan LiuYaping WangXin XuChristopher HopperHongbiao DongXingtao WangHongbin ZhuJun JiangElsevierarticleLaser cladding remanufacturing316L stainless steelHot deformationMechanical propertiesInterfacial microstructure evolutionMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials & Design, Vol 212, Iss , Pp 110255- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Laser cladding remanufacturing 316L stainless steel Hot deformation Mechanical properties Interfacial microstructure evolution Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Laser cladding remanufacturing 316L stainless steel Hot deformation Mechanical properties Interfacial microstructure evolution Materials of engineering and construction. Mechanics of materials TA401-492 Yuehan Liu Yaping Wang Xin Xu Christopher Hopper Hongbiao Dong Xingtao Wang Hongbin Zhu Jun Jiang The study of hot deformation on laser cladding remanufactured 316L stainless steel
description	Laser cladding deposition (LCD) is widely used to remanufacture/repair workpieces because of its high design freedom to rebuild areas of damage. However, the process often introduces a columnar grain structure in the cladding layer, resulting in a large variation of microstructure and hardness across the cladding layer, welding interface, and base metal. Under fatigue and tensile loading, fractures can initiate in the lower hardness cladding layer. This study explores the feasibility of a new hybrid remanufacturing method integrating the LCD with a subsequent hot deformation process to refine grain structures, reduce hardness variations, and enhance mechanical properties. The effects of deformation temperatures and imposed plastic strains were studied by examining the microstructural and stress–strain behaviour of laser cladded 316L stainless steel. After LCD, compressive deformation was imposed at temperatures of 900 and 1100 °C, with engineering strain levels of 0.1 and 0.5. A high-quality metallurgical joint was achieved, with the optimal ultimate tensile strength and yield strength under process conditions of an engineering strain level of 0.5 imposed at 900 °C (35% improvement compared to the directly laser cladding remanufacturing process). Dynamic recrystallization process was observed by the electron back scatter diffraction technique to reveal the underlying mechanism.
format	article
author	Yuehan Liu Yaping Wang Xin Xu Christopher Hopper Hongbiao Dong Xingtao Wang Hongbin Zhu Jun Jiang
author_facet	Yuehan Liu Yaping Wang Xin Xu Christopher Hopper Hongbiao Dong Xingtao Wang Hongbin Zhu Jun Jiang
author_sort	Yuehan Liu
title	The study of hot deformation on laser cladding remanufactured 316L stainless steel
title_short	The study of hot deformation on laser cladding remanufactured 316L stainless steel
title_full	The study of hot deformation on laser cladding remanufactured 316L stainless steel
title_fullStr	The study of hot deformation on laser cladding remanufactured 316L stainless steel
title_full_unstemmed	The study of hot deformation on laser cladding remanufactured 316L stainless steel
title_sort	study of hot deformation on laser cladding remanufactured 316l stainless steel
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/abc2f1da421245048f0de6538e45e802
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The study of hot deformation on laser cladding remanufactured 316L stainless steel

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