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Seyed Mohammad Hossein Seyedkashi

Seyed Mohammad Hossein Seyedkashi

Professor

عضو هیئت علمی تمام وقت

Faculty: Engineering

Department: Mechanical Engineering

Degree: Ph.D

CV Personal Website
Seyed Mohammad Hossein Seyedkashi

Professor Seyed Mohammad Hossein Seyedkashi

عضو هیئت علمی تمام وقت
Faculty: Engineering - Department: Mechanical Engineering Degree: Ph.D |

Seyed Mohammad Hossein Seyedkashi received the Bachelor of Science degree in Manufacturing Engineering from Tabriz University, Tabriz, Iran, in 2003, the Master of Science degree from Tarbiat Modares University, Tehran, Iran, in 2005, and the Ph.D. degree in Manufacturing Engineering from Tarbiat Modares University in 2012. He is currently a Professor in the Mechanical Engineering Department, Faculty of Engineering, at the University of Birjand, Birjand, Iran. His research interests include metal forming (hydroforming, laser forming, roll forming), additive manufacturing, friction welding, and optimization.

 

 

My affiliation

Mechanical Engineering Department, Faculty of Engineering, University of Birjand, Birjand, Iran.

 

نمایش بیشتر

Evaluation of microstructure and microhardness of AISI 316L stainless steel manufactured by laser-directed energy deposition

AuthorsSeyed Mohammad Hossein Seyedkashi,Mahmoud Moradi
Conference Titleبیستمین همایش ملی و نهمین کنفرانس بین المللی مهندسی ساخت و تولید
Holding Date of Conference2024-02-21
Event Placeتهران
Page number0-0
PresentationSPEECH
Conference LevelInternal Conferences

Abstract

Laser-Directed Energy Deposition (L-DED) technique can create an object on substrates through line-by-line deposition. AISI 316L stainless steel is employed across diverse industries, including aerospace, medical, automotive, and marine sectors. The present research investigated the additive manufacturing of AISI 316L stainless steel using the L-DED system. The microstructure and hardness of the AISI 316L bulk sample are analyzed using optical microscopy and a microhardness tester. The microstructure in the AISI 316L bulk sample showed an equiaxial and columnar dendritic structure. Furthermore, The center of the melt pool had a fine dendritic structure, while the boundary of the melt pool had a coarse dendritic structure. Microstructural defects including lack of fusion and gas porosity were observed. The lack of fusion was mainly observed at the interface of the layers. The hardness in different parts of the sample varied from 265 HV to 356 HV.

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