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首页> 外文期刊>International Journal of Fatigue >Fatigue properties of as-welded and post-weld-treated high-strength steel joints: The influence of constant and variable amplitude loads
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Fatigue properties of as-welded and post-weld-treated high-strength steel joints: The influence of constant and variable amplitude loads

机译：焊接和焊接后处理的高强度钢结构的疲劳性能：恒定和可变幅度负荷的影响

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摘要

In HSS welded structures, HFMI allows fatigue strength improvement factors by inducing compressive residual stresses, cold-worked surface region and modifying the weld toe shape. According to the literature, the factors are proposed based on failures at CAL and also checked with a limited dataset at VAL, the latter being more realistic of service loadings. Therefore, this paper investigates the behaviour of HFMI welds at CAL and VAL for R = - 0.43. Studies are also performed at the microstructural level for locating the crack initiation and hardness. Fatigue damage sums are evaluated and discussed with the recommended values in the literature.
机译：在HSS焊接结构中，HFMI通过诱导压缩残余应力，冷加工的表面区域和改变焊接脚趾形状来允许疲劳强度改善因子。根据文献，基于CAR的故障提出了因素，并在VAT中使用有限数据集检查，后者更加逼真。因此，本文研究了Cal和Val的HFMI焊缝的行为，用于r = - 0.43。还在微观结构水平下进行研究，以定位裂纹引发和硬度。评估疲劳损坏总和，并在文献中的推荐值进行评估和讨论。

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