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首页> 外文期刊>Journal of Materials Engineering and Performance >The Effect of Strain-Rate Sensitivity on Formability of AA 5754-O at Cold and Warm Temperatures
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The Effect of Strain-Rate Sensitivity on Formability of AA 5754-O at Cold and Warm Temperatures

机译：应变速率敏感性对冷热温度下AA 5754-O成形性的影响

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摘要

Aluminum-magnesium (Al-Mg) alloys have been widely used in diverse applications ranging from automotive bodies to food processing industries because of their excellent high-strength-to-weight ratio, corrosion resistance, and recyclability potential. The formability of these alloys is decreased at room temperature (RT) and is related with the strain-rate sensitivity. This study presents the effect of strain-rate sensitivity on formability of AA 5754-O alloy sheet at a test temperature range of −60 to 250 °C by duplicate tensile test at different strain rates. The test results indicated that the formability change with positive or negative strain-rate sensitivity values. It was observed that the strain-rate sensitivity values increased at negative temperatures with respect to RT. The best formability condition for this alloy in the test ranges was observed at 250 °C and 0.0016 s−1.
机译：铝镁（Al-Mg）合金因其出色的高强度重量比，耐腐蚀性和可回收性而被广泛应用于从汽车车身到食品加工行业的各种应用中。这些合金的可成型性在室温（RT）下会降低，并且与应变率敏感性相关。这项研究通过在不同应变速率下进行重复拉伸试验，得出了在-60至250°C的测试温度范围内，应变速率敏感性对AA 5754-O合金板材成形性的影响。测试结果表明，成形性随正应变率或负应变率灵敏度值而变化。观察到，相对于RT，应变率灵敏度值在负温度下增加。在250°C和0.0016 s -1 的条件下，观察到了该合金在测试范围内的最佳成形性条件。

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