Microstructure development in impact welding of a model system

SCRIPTA MATERIALIA

卷:178

Article

Lee, Taeseon¹  Nassiri, Ali²  Dittrich, Taylor^1,3  Vivek, Anupam¹  Daehn, Glenn¹ 

[1] Ohio State Univ, Dept Mat Sci & Engn, 2041 Coll Rd, Columbus, OH 43210 USA

[2] Ohio State Univ, Dept Integrated Syst Engn, 1971 Neil Ave, Columbus, OH 43210 USA

[3] Lincoln Elect, Consumables R&D, 22801 St Clair Ave, Cleveland, OH 44117 USA

关键词: Impact welding;    Single crystal;    Severe plastic deformation;    Copper;    Smoothed particle hydrodynamics;   

DOI  :  10.1016/j.scriptamat.2019.11.031

来源: Elsevier

【 摘 要 】

Characteristic features of impact welding were investigated in a simple model system of colliding copper single crystals. Large grained sheets were used to approximate single crystal to single crystal impact. Optical microscopy and electron backscatter diffraction (EBSD) analyses showed multiple features of the weld interface, which include deformation twinning, adiabatic shear banding, localized melting, and dynamic recrystallization. To support the microstructural findings, numerical simulation based on smoothed particle hydrodynamics method was conducted to predict the local temperature, pressure, and strain distributions, The insights gathered here will aid in the design of materials combinations and systems for impact welding. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free