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首页> 外文期刊>Rivista Italiana della Saldatura >Welding inducEd residual stresses in explosion AL-6XN superaustenitc stainless steel and ASME SA5IB-7B steel composite plates
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Welding inducEd residual stresses in explosion AL-6XN superaustenitc stainless steel and ASME SA5IB-7B steel composite plates

机译：爆炸AL-6XN超级不锈钢和ASME SA5IB-7B钢复合板的焊接残余应力

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摘要

Explosion welding is a solid state joining process that allows the manufacturing of corrosion resistant structural composite materials in the form of plates. In the present work, composite bimetal plates of AL-6XN superaustenitic stainless steel and ASME SA516-70 carbon steel produced by explosion welded were studied. Post-weld annealing for stress relief was conducted at 600 °C for 30 min and the materials were examined in both the as welded and heat treated conditions. The microstructure of the weld was characterized by optical and scanning electron microscopy and the variation of hardness across the cladded interface was determined by applying Vickers microhardness. The residual stresses generated by the explosion welding process were analyzed by X-ray diffraction using the sin2ψ technique. The cladded interface exhibited a wavy morphology, characteristic of high bonding strength in explosion welds and the variation of hardness was found to be strongly influenced by strain hardening at the cladded interface. Elevated tensile stresses (700 ± 30 MPa) were present after explosion welding. Application of the proposed heat treatment allowed for significant stress relaxation, with a final tensile stress of 93 ± 10 MPa.
机译：爆炸焊接是一种固态连接工艺，可以制造呈板形式的耐腐蚀结构复合材料。在本工作中，研究了通过爆炸焊接生产的AL-6XN超奥氏体不锈钢和ASME SA516-70碳钢复合双金属板。焊后退火用于缓解应力在600°C下进行30分钟，并在焊接和热处理条件下对材料进行检查。通过光学和扫描电子显微镜对焊缝的显微结构进行表征，并通过应用维氏显微硬度来确定熔覆界面上的硬度变化。使用sin2ψ技术通过X射线衍射分析了爆炸焊接过程中产生的残余应力。包层的界面呈现出波浪形的形态，在爆炸焊接中具有高结合强度的特征，并且发现硬度的变化受包层的界面处的应变硬化的强烈影响。爆炸焊接后存在较高的拉伸应力（700±30 MPa）。所建议的热处理方法的应用可以显着缓解应力，最终拉伸应力为93±10 MPa。

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