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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials >Evaluating structural integrity of cast Al-7 percent Si-Mg alloys via work hardening characteristics II. A new quality index
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Evaluating structural integrity of cast Al-7 percent Si-Mg alloys via work hardening characteristics II. A new quality index

机译：通过加工硬化特性评估铸造的Al-7％Si-Mg合金的结构完整性II。新的质量指标

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摘要

Toughness, as defined by the energy to failure constituted by the area under the true stress-strain curve, of Al-7 wt. percent Si-Mg alloys with three different Mg contents (0.20, 0.40, and 0.60 wt. percent) was analyzed. Since toughness is markedly affected by the presence of structural discontinuities, a new quality index based on toughness is proposed. The index, Q_E, can be found by comparing the toughness of the specimen with its threshold toughness, based on the concept of target properties. Threshold toughness is proposed as a target value. The new quality index can he applied to all specimens regardless of their processing history and chemical composition.
机译：韧性由Al-7 wt。％的断裂能定义，该断裂能由真实应力-应变曲线下的面积组成。分析了具有三种不同Mg含量（0.20、0.40和0.60 wt。％）的Si-Mg合金百分比。由于韧性明显受结构不连续性的影响，因此提出了一种新的基于韧性的质量指标。可以根据目标特性的概念，通过将试样的韧性与其阈值韧性进行比较来找到指数Q_E。建议将阈值韧性作为目标值。无论样品的加工历史和化学成分如何，新的质量指标都可以应用于所有样品。

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