Affiliation of Author(s):自动化学院
Journal:MATERIALS SCIENCE AND TECHNOLOGY
Key Words:Primary dendrite arm spacing Al-Cu alloy Weld Phase-field model
Abstract:Primary dendrite arm spacing in tungsten inert gas welding pool for Al-4wt%Cu alloys is predicted by a quantitative phase-field model. Transient conditions are obtained by functions of thermal gradient and solidification rate. When the same welding power is given by 3500W and different welding velocities are given by 1.5, 2.0 and 2.5mms(-1), the primary dendrite arm spacing obtained by simulation results is the largest under the welding velocity of 2.0mms(-1). When the same welding velocity is given by 2.5mms(-1) and different welding power is given by 3500, 4000 and 5000W, the primary dendrite arm spacing acquired by simulation results is the largest under the welding power of 5000W. Primary dendrite arm spacing and morphology obtained by simulation results agrees well with experimental findings.
ISSN No.:0267-0836
Translation or Not:no
Date of Publication:2017-01-01
Co-author:yangweiwei,fjy
Correspondence Author:王莉,Wang Li,yangweiwei