Fatigue strength of hot-dip galvanized S960 cut edges and longitudinal welds

被引：8

作者：

Lipiainen, Kalle ^{[1
]}

Ahola, Antti ^{[1
]}

Virolainen, Esa ^{[2
]}

Hirvi, Ari ^{[3
]}

Bjork, Timo ^{[1
]}

机构：

[1] Lappeenranta Lahti Univ Technol LUT, Lab Steel Struct, POB 20, FI-53851 Lappeenranta, Finland

[2] SSAB Europe, POB 93, FI-92101 Raahe, Finland

[3] SSAB Special Steels, POB 93, FI-92101 Raahe, Finland

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2022年 / 189卷

关键词：

Fatigue strength; Hot-dip galvanizing; Ultra-high-strength steel; Cut edge; Welded joint;

D O I：

10.1016/j.jcsr.2021.107083

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Experimental fatigue test series were conducted for component sized hot-dip galvanized (HDG) S960 cut edges and longitudinal welds. Scanning electron microscopy (SEM) was used to identify and characterize the crack initiation location and the effects of local chemical composition. Micro-scale liquid metal embrittlement in the vicinity of the cut surface was found to slightly reduce fatigue performance of tested laser cut, machined and welded specimens. The use of ultra-high-strength steels in the HDG condition is discussed and fatigue strength guidelines are proposed for the tested details.

引用

页数：11

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