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用拉伸试验机、疲劳试验机、扫描电镜等对激光焊接6156-T4铝合金对接接头和T型接头的拉伸性能、疲劳性能和断口形貌进行了对比研究.结果表明:对接接头的拉伸性能接近于母材的,T型接头的抗拉强度较母材的有一定程度的降低,对接接头的疲劳强度明显高于T型接头的;对接接头疲劳断口位于热影响区,T型接头的断口穿过热影响区和母材;两种接头疲劳裂纹均萌生于应力集中较为严重的焊趾部位,以近似半椭圆的形状沿厚度方向扩展直至接头断裂.
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机械工程材料
ISSN: 1000-3738
Year: 2017
Issue: 8
Volume: 41
Page: 59-62
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: -1
Chinese Cited Count:
30 Days PV: 9
Affiliated Colleges: