期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 527, 期 6, 页码 1537-1543出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2009.10.039
关键词
7XXX series alloys; Boundary condition; Under-water FSW
类别
资金
- National Science Foundation I/UCRC [EEC-0437341]
A series of friction stir welds was made in laboratory air and with the plates submerged in water to investigate how the quenching rate affects properties of the joint and some weld response parameters. Select welds were also made at a sub-ambient temperature of -25 degrees C. Temperature measurements were made in the probe center and at the minimum hardness location of the weld. Weld response variables, hardness distributions,joint strength and nugget grain size were measured and correlated with boundary conditions and welding parameters. A consistent decrease in the peak temperature and increase in cooling rate were observed in the submerged welds. Submerged welds show improvement in tensile strength and elongation throughout the range of parameters tested. (C) 2009 Elsevier B.V. All rights reserved.
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