Influence of High-Strength, Low-Alloy Steel on Fatigue Life at a Non-Load-Bearing Transverse Welded Attachment

IF 0.6 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY SAE International Journal of Materials and Manufacturing Pub Date : 2023-11-17 DOI:10.4271/05-17-01-0002

Gareth Allan Ramsay, Gerhard Venter, Johann Bredell

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Abstract

This study investigated the influence of high-strength low-alloy steel on the fatigue life of a load-bearing member with a non-load-bearing transverse welded attachment (T-joint). It compared high cycle fatigue data to two fatigue design codes, namely BS 7608 and Eurocode EN 1993-1-9. Different base and filler material combinations of varying material strengths were investigated, resulting in a total of three different specimen configurations. Two material combinations had a high-strength steel (Strenx® 700 MC D) for the base material, with one combination having a matched filler material and the other having an undermatched filler material. The third material combination had a lower-strength steel (S 355 JR AR) for the base material, with a matched filler material. Tensile tests were performed to confirm the base material mechanical properties and weld quality of the manufactured specimens. The investigation showed that there was no significant benefit to using high-strength steel as the base material for a fatigue loaded T-joint with a non-load-bearing welded attachments.

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高强度低合金钢对非承重横向焊接附件疲劳寿命的影响

本研究探讨了高强度低合金钢对带有非承重横向焊接附件（T 型接头）的承重构件疲劳寿命的影响。研究将高循环疲劳数据与两种疲劳设计规范（即 BS 7608 和 Eurocode EN 1993-1-9）进行了比较。研究了不同材料强度的基体和填充材料组合，共得出三种不同的试样配置。两种材料组合的基体材料是高强度钢（Strenx® 700 MC D），其中一种组合使用匹配的填充材料，另一种组合使用不匹配的填充材料。第三种材料组合使用强度较低的钢材（S 355 JR AR）作为基材，并使用匹配的填充材料。对制造的试样进行了拉伸试验，以确认母材的机械性能和焊接质量。调查结果表明，使用高强度钢作为带有非承重焊接附件的疲劳加载 T 形接头的母材并无明显益处。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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SAE International Journal of Materials and Manufacturing TRANSPORTATION SCIENCE & TECHNOLOGY-

CiteScore

1.30

自引率

12.50%

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