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OALib Journal期刊
ISSN: 2333-9721
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合金元素对a7n01s-t5铝合金力学性能和断裂韧性的影响
Keywords: 金属材料,a7n01s-t5铝合金,合金元素,显微组织,力学性能,断裂韧度
Abstract:
？测试4种a7n01s-t5铝合金的力学性能和断裂韧性,研究了不同合金元素的影响。结果表明:影响a7n01s-t5铝合金性能的3类合金元素适宜的成分配比为zn(4.34)、mg(1.43),mn(0.27)、cr(0.13),zr(0.12)、ti(0.066)。在此条件下,合金的抗拉强度、屈服强度、伸长率、冲击功和断裂韧度分别为415mpa,378mpa,13.49%,12.3j和28.950kjm-2。极差分析表明,zn、mg含量是合金强度与塑性共同的主要影响因素。因此,为了制备出综合性能优异的合金,需选取适当的zn、mg含量。对于成分配比适宜的合金,其晶内析出相η′(mgzn2)呈细小弥散状分布,而晶界析出相η(mgzn2)粗大,呈断续状分布。
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