The transition in temperature and associated stress induced during machining, may affect the structural integrity of the Al7075-T6 alloy. In the present study, Steinberg Guinan material parameters were used to investigate the dynamic behaviour viz chip morphology (fracture mechanism), temperature change and flow stress in the elasto-visco material Al7075-T6. An explicit algorithm, was adopted to investigate the outcomes. Results showed chip formation and the mode of fracture was closely related with depth of cut and can influence the temperature and flow stress during the machining process. Work hardening and edge dislocation slip in the secondary shear zone was observed to have a notable influence. An optimal machining condition was found between 0.6 and 0.7 mm depth of cut.

中文翻译：

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使用数值技术对Al7075-T6的弹黏行为

在加工过程中引起的温度变化和相关应力可能会影响Al7075-T6合金的结构完整性。在本研究中，Steinberg Guinan材料参数用于研究弹性粘稠材料Al7075-T6的动态行为，即芯片形态（断裂机理），温度变化和流动应力。采用了显式算法来调查结果。结果表明，切屑的形成和断裂方式与切削深度密切相关，并且会影响加工过程中的温度和流动应力。观察到在二次剪切区的加工硬化和边缘错位滑动具有显着影响。发现最佳的加工条件是在0.6至0.7毫米的切削深度之间。