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Interior crack and its formation mechanism in overlaying weld of back-up rolls

Qingbao Wang,Zhuoxin Li,Yaowu Shi,Lizhi Wang,Fei Liu

Engineering Failure Analysis（2013）

Cited 8|Views22
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Abstract
•Interior crack in overlaying weld of back-up rolls was studied.•Fracture surfaces without cracks was mainly transgranular fracture.•Fracture surfaces with cracks was columnar crystals and secondary cracks.•Optimizing alloy system and reducing impurities were taken to prevent crack.
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Key words
Interior crack,Overlaying weld,Tensile fractography
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