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요약정보
不锈钢薄板搭接激光软钎焊接头组织与性能
Resource Type
Academic Journal
Authors
刘勇
;
李刚卿
;
王生希
;
韩晓辉
;
王博
;
叶结和
Source
焊接学报 / Transactions of the China Welding Institution
. 44(4):45-49
Subject
304不锈钢
激光软钎焊
微观组织
剪切性能
Language
Chinese
ISSN
0253-360X
Online Access
Scopus
Find it @ DONGA
초록
采用激光对 304不锈钢薄板搭接缝进行软钎焊,并对钎缝组织与力学性能进行了研究.工艺试验结果表明,当激光束倾角为 60°和离焦量为 300 mm时,能够有效降低激光束的热输入,实现 304不锈钢薄板搭接缝的无变形钎焊,填缝深度可达 5 mm,钎缝外观成形光滑、饱满,颜色与母材相近,无需涂装.钎焊接头分为不锈钢母材区、钎缝区、不锈钢母材区 3个区域,钎缝区和母材区的边界清晰且明显,钎缝组织连续致密,无气孔、裂纹等缺陷.钎缝显微组织主要由黑色固溶体相、大菱形块状白色相和短棒状白色相组成,分析认为 3种相分别为锡基固溶体相、SnSb相和Cu6Sn5 相.钎料和母材之间形成约 1~2 μm金属化合物FeSn2 扩散层.钎缝的平均抗剪强度测试结果为39 MPa,能够满足不锈钢薄板搭接缝的工程应用.
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