Abstract Residual stresses (RS) are often induced through quenching of aluminum alloys and present a potential risk of developing crack or distortion in subsequent manufacturing processes. Study of methods to minimise the RS in quenched components is of practical importance. In this paper, cold rolling (CR) has been carried out to remove the RS in quenched AA7050 blocks. The CR effect on relaxing RS in quenched AA7050 blocks has been evaluated via the neutron diffraction (ND), X-ray diffraction (XRD) and contour techniques. The results reveal that although CR transforms near-surface residual stresses from large compression to large tension along the rolling direction, it results in remarkable RS relief in the core part of the material. An integrated finite element model for RS evolution through the CR process was put forward and has been validated by the experimental results.

中文翻译：

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AA7xxx 铝合金冷轧热残余应力松弛的量化

摘要 残余应力 (RS) 通常是通过铝合金淬火引起的，并且在后续制造过程中存在产生裂纹或变形的潜在风险。研究使淬火组件中的 RS 最小化的方法具有实际意义。在本文中，冷轧 (CR) 已用于去除淬火 AA7050 块中的 RS。已通过中子衍射 (ND)、X 射线衍射 (XRD) 和轮廓技术评估了 CR 对淬火 AA7050 块中松弛 RS 的影响。结果表明，虽然CR沿轧制方向将近表面残余应力从大压缩转变为大拉伸，但它在材料的核心部分产生了显着的RS消除。