Zhang Zhao
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Main positions:Professor in Process Mechanics
Gender:Male
Alma Mater:Dalian University of Technology
Degree:Doctoral Degree
School/Department:Department of Engineering Mechanics, Dalian University of Technology
Discipline:mechanics of manufacturing process. Engineering Mechanics. Computational Mechanics
Business Address:Room 619,Integrated Laboratory building (1#)
Contact Information:+86-411-84708432 zhangz@dlut.edu.cn
E-Mail:zhangz@dlut.edu.cn
Hits:
Indexed by:期刊论文
Date of Publication:2008-01-01
Journal:JOURNAL OF MATERIALS SCIENCE
Included Journals:SCIE、EI
Volume:43
Issue:1
Page Number:222-232
ISSN No.:0022-2461
Abstract:Friction stir welding is a new solid state joining technology, which is suitable for joining some hard-to-weld materials, such as aluminum alloy, magnesium alloy, etc. The modeling of material flows can provide an efficient method for the investigation on the mechanism of friction stir welding. So, 3D material flows under different process parameters in the FSW process of 1018 steel are studied by using rate-dependent constitutive model. Numerical results indicate that the border of the shoulder can affect the material flow near the shoulder-plate interface. The mixture of the material in the lower half of the friction stir weld can benefit from the increase in the angular velocity or the decrease in the welding speed. But flaws may occur when the angular velocity is very high or the translational velocity is very small. When the angular velocity applied on the pin is small or the welding speed is high, the role of the extrusion of pin on transport of the material in FSW becomes more important. Swirl or vortex occurs in the tangent material flow and may be easier to be observed with the increase in the angular velocity of the pin.
Zhang Zhao, Ph.D., Professor in Process Mechanics.
Editorial member in Coatings (IF:2.881) from 2020 to 2022.
Editorial member in Crystals (IF:2.589) from 2020 to 2022.
Younth editorial member in Journal of Central South University(IF:1.716) from 2020 to 2022.
Professor Zhang has published more than 60 SCI publications with over 1100 citations. He served as reviewers for more than 30 international journals. His main pulications can be found:
https://orcid.org/0000-0001-7181-8617
https://publons.com/researcher/1987190/zhao-zhang/
The scientific research focuses on experimental and numerical works on friction stir welding/processing/additive manufacturing, numerical modelling and simulation of additive manufacuring, topological design of phononic crystals, locomotive and high speed train design.
