Laser Welding of Modern Automotive High Strength Steels

机译：现代汽车高强度钢的激光焊接

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The paper demonstrates the correlation between the chemical composition of steel grades and the hardness as well as the formability of laser welds generated with modern automotive high strength steel grades. At the very low heat input of industrial laser welding and the resulting extremely high cooling rate, the weld hardness is fully controlled by the carbon content of the base materials and not by the carbon equivalent. Correspondingly, the ductility of the weld seam decreases with increasing carbon content as will be demonstrated by Erichsen cup testing on laser welded samples. Based on these results it is possible to derive guidelines in terms of influencing the alloy design, the welding process as well as the material selection for a given application. In particular cases, the benefits that can be obtained with niobium microalloyed materials will be highlighted.

机译：本文证明了钢种的化学成分与硬度以及现代汽车高强度钢种产生的激光焊接的可成形性之间的相关性。在工业激光焊接的热量输入非常低且冷却速度极高的情况下，焊接硬度完全由基础材料的碳含量而不是碳当量控制。相应地，焊缝的延展性随着碳含量的增加而降低，这将通过对激光焊接样品进行的埃里克森杯测试来证明。根据这些结果，可以得出影响合金设计，焊接工艺以及给定应用的材料选择方面的指导原则。在特定情况下，将突出显示铌微合金化材料可以获得的好处。

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来源
《Iron Steel Supplement 2005 vol.40: The Joint International Conference of HSLA Steels 2005 and ISUGS 2005》|2005年|P.582-586|共5页
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Hardy Mohrbacher;
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原文格式 PDF
正文语种
中图分类钢铁冶炼（黑色金属冶炼）（总论）;
关键词
laser welding; high-strength steel; formability; niobium microalloying;

机译：激光焊接;高强度钢;成形性;铌微合金化;

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Laser Welding of Modern Automotive High Strength Steels

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