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首页> 外文期刊>Journal of Materials Research >Influence of flash butt welding parameters on microstructure and mechanical properties of HSLA 590CL welded joints in wheel rims
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Influence of flash butt welding parameters on microstructure and mechanical properties of HSLA 590CL welded joints in wheel rims

机译：闪光对焊参数对轮辋HSLA 590CL焊接接头组织和力学性能的影响

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摘要

The object of the present investigations was to evaluate the effect of flash butt welding parameters on microstructures and mechanical properties of HSLA 590CL welded joints in wheel rims by adjusting welding parameters separately. The amount of Widmanstatten ferrites and bainite in the weld metal, and grain size were observed with the adjustment of welding parameters. The tensile strength of welded joints met the strength requirement of wheel rims steels, but the tensile strength and tensile fracture were different in different welding parameters. Micro-hardness distributions of welded joints in different welding parameters were similar, that is the maximum micro-hardness occurred in the weld and micro-hardness decreased from the weld to base metal. A certain degree of softening phenomenon was found in the heat affected zone (HAZ), which should result from the heat input in the flash butt welding. Two failure mechanisms of wheel rims in the expanding process were investigated. The first type fractured at the HAZ and showed ductile fracture characteristics, the crack initiation located at the thinning location. The second type fractured at the weld and showed brittle fracture characteristics.
机译：本研究的目的是通过分别调节焊接参数来评估闪光对焊参数对轮辋中HSLA 590CL焊接接头的组织和力学性能的影响。调整焊接参数后，观察到焊接金属中的威氏锰铁素体和贝氏体的含量以及晶粒尺寸。焊接接头的抗拉强度满足轮辋钢的强度要求，但在不同的焊接参数下其抗拉强度和抗拉断裂性不同。在不同的焊接参数下，焊接接头的显微硬度分布是相似的，即在焊缝中出现最大的显微硬度，从焊缝到母材的显微硬度降低。在热影响区（HAZ）中发现了一定程度的软化现象，该现象应由对接焊缝中的热量输入引起。研究了轮辋在膨胀过程中的两种失效机理。第一类在热影响区断裂，并表现出韧性断裂特性，裂纹萌生处在稀疏位置。第二种在焊缝处断裂，并表现出脆性断裂特性。

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  • 来源
    《Journal of Materials Research》 |2017年第4期|831-842|共12页
  • 作者

    Ping Lu; Zhixin Xu; Kaiyong Jiang; Feng Ma; Yang Shu;

  • 作者单位

    Fujian Provincial Key Laboratory of Special Energy Manufacturing, Huaqiao University, Xiamen 361021, China Xiamen Key Laboratory of Digital Vision Measurement, Huaqiao University, Xiamen 361021, China;

    Fujian Provincial Key Laboratory of Special Energy Manufacturing, Huaqiao University, Xiamen 361021, China Xiamen Key Laboratory of Digital Vision Measurement, Huaqiao University, Xiamen 361021, China;

    Fujian Provincial Key Laboratory of Special Energy Manufacturing, Huaqiao University, Xiamen 361021, China Xiamen Key Laboratory of Digital Vision Measurement, Huaqiao University, Xiamen 361021, China;

    Xiamen sunrise metal co., Ltd., Xiamen 361100, China;

    Fujian Provincial Key Laboratory of Special Energy Manufacturing, Huaqiao University, Xiamen 361021, China Xiamen Key Laboratory of Digital Vision Measurement, Huaqiao University, Xiamen 361021, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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