Mathematical Model of the Flow Stress of Aluminium Alloys
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摘要: 采用恒應變速率凸輪塑性計,對4種鋁合金的流動應力進行了實驗研究,分析了變形溫度、應變速率及應變率對流動應力的影響.通過對5種不同結構型式的流動應力數學模型的回歸分析比較,提出了擬合精度較高的4個鋁合金流動應力的數學模型,并給出了數學模型的回歸系數值.Abstract: The flow stresses of four aluminium alloys have been studied using a cam plastometer. The effects of deformation temperature, strain rate and stain on flow stresses of the aluminium alloys were examined. Acoording to the analysis with regression and comparison between the mathematical models of flow stresses of five types, a mathematical model of flow stresses with great confidence of the four aluminium alloys is proposed, and its regression coefficient is also recommended.
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Key words:
- flow stress /
- cam plastometer /
- true stress /
- deformation resistance
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