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Abstract
Research & Development in Material Science
A Novel Method of Reducing Residual Stress: Low Transformation Temperature (LTT) Weld Filler
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Open or Close Yangguang Deng and Wenchun Jiang*
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, China
*Corresponding author: Wenchun Jiang, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao, 266580, PR China
Submission: May 10, 2018;Published: May 16, 2018
ISSN: 2576-8840Volume6 Issue3
Abstract
An innovative, alternative method to improve the undesired residual stress state during the welding process without time-consuming post weld treatments was overviewed. The LTT ‘smart’ alloy weld filler can effectively reduce the harmful tensile residual stress and even generate the beneficial compressive residual stress, due to the volume expansion of low temperature martensitic transformation. This paper briefly describes the mechanism and research of the formation of residual stress related to LTT weld filler.
Keywords: LTT alloy; Phase transformation; Residual stress
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