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优化机械结构通过不相似材料的接,以轻量化组件
Jarosław Szusta1, Łukasz Derpeński1, Özler Karakaş2
1Department of Machine Design and Exploitation, Faculty of Mechanical Engineering, Bialystok University of Technology, Wiejska 45C Str., 15-351 Bialystok, Poland.
Materials (Basel, Switzerland)
|January 10, 2026
概括
该研究利用冷金属转移优化不同钢的接,发现机械清洗,低能 (0.334 kJ/mm) 和0.5 mm的间隙显著提高了S355J2和Strenx 700E钢的关节强度和完整性.
科学领域:
- 材料科学与工程 材料科学与工程
- 接技术 接技术
- 机械工程 机械工程
背景情况:
- 连接不同钢材对于轻量化,高性能结构至关重要.
- 材料性能差异带来了重要的接挑战.
- 优化接工艺对于S355J2和Strenx 700E等特定钢材等级至关重要.
研究的目的:
- 为了优化不同类型的S355J2和Strenx 700E钢的接过程.
- 调查表面准备,线性能量和关节间隙对接完整性的影响.
- 为了确定最佳的接参数,以获得卓越的关节性能.
主要方法:
- 使用冷金属转移 (CMT) 接.
- 系统的调查包括拉力测试,数字图像相关性 (DIC),断层学和微硬度分析.
- 研究的关键过程变量包括表面清洁方法,线性能量和关节间隙大小.
主要成果:
- 通过机械表面清洁,低线性能量 (0.334 kJ/mm) 和0.5毫米的关节间隙来实现最佳性能.
- 优化的接头具有616MPa的抗拉强度,比未清洗的样品提高32%.
- 在整个接头上观察到均的塑料变形,受热影响的区域较窄,高强度钢没有显著的软化.
结论:
- 机械表面清洁,低线性能量和特定的关节间隙对于成功接不同钢的接至关重要.
- 优化的CMT接参数显著提高了S355J2 / Strenx 700E接头的机械性能和完整性.
- 这项研究为制造使用不同钢铁组合的先进轻质结构提供了宝贵的见解.
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