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Title: Effects of DLC coating on relaxing surface residual stress of the weld in titanium-bearing high-strength steel
Authors: Chia-Po Hung
Shu-Ming Wu
Shing-Hoa Wang
Jiann-Kuo Wu
Chien-Min Sung
Contributors: 國立臺灣海洋大學:機械與機電工程學系
Keywords: surface residual stress
diamond-like carbon (DLC)
pulsed GTAW
Date: 2015-02
Issue Date: 2018-09-27T02:05:28Z
Publisher: Journal of the Chinese Institute of Engineers
Abstract: Abstract: The distribution of as-welded residual stresses in titanium-bearing low-carbon high-strength steel exhibiting two controlled initial plate temperatures (7 and 25 °C) was measured and calculated under the same heat input. The as-welded plate containing the cooling system at 7 °C exhibited a higher residual tensile stress than the as-welded plate did at room temperature (25 °C) because of the greater temperature gradient in the 7 °C system. The diamond-like carbon (DLC) thin-film coating was examined after welding and confirmed using the Raman spectrum. The successful DLC thin-film deposited on the as-welded plates further reduced and relaxed the magnitude of the surface residual stress of weld caused by the cathodic arc physical vapor deposition process. The distributions of the measured surface residual stresses on weld correspond with the finite element method simulated results.
Relation: 38(5)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50244
Appears in Collections:[機械與機電工程學系] 期刊論文

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