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铝合金/碳钢药芯焊丝熔-钎焊时的界面层脱落

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Indexed by:期刊论文

Date of Publication:2013-06-01

Journal:中国有色金属学报(英文版)

Included Journals:ISTIC、CSCD、SCIE、EI

Volume:23

Issue:6

Page Number:1583-1588

ISSN No.:1003-6326

Key Words:铝合金;钢;异种金属连接;界面层;脱落

Abstract:采用锌基药芯焊丝对铝合金和无镀层低碳钢进行钨极氩弧熔?钎焊搭接。在焊缝中发现从界面层脱落的富铁层,Al?Zn相流入界面层和脱落层之间的夹层区域,并加速富铁层的进一步脱落。在焊缝凝固过程中,富铁脱落层逐渐向焊缝深处扩散、迁移。界面层的厚度为15μm,焊态下铝/钢异种金属接头的抗拉强度达111 MPa。经焊后热处理,接头的抗拉强度提高到150 MPa。

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