作　　者： ; ; ; ; ; ; ;

机构地区： 中国兵器科学研究院

出　　处： 《兵器材料科学与工程》 2013年第2期56-58,共3页

摘　　要： 研究喷射沉积超高强铝合金的自然时效时间0.25,0.5,1,2,2.5,3 a的力学与组织行为。结果表明:在前2 a内,合金的抗拉强度和屈服强度随自然时效时间的延长而增强,最大抗拉强度达到810 MPa,而伸长率则从最初的11%减少到6%;自然时效2.5 a,合金的抗拉强度减少到750 MPa,而伸长率提高到10%;时效3 a后,合金的抗拉强度增强到800 MPa,伸长率降低到8%。 The natural aging behavior of spray formed superhigh aluminum alloys was researched, and the aging time was choosed as 0.25, 0.5, 1, 2, 2.5, 3 a. The results show that at the first 2 a, the tensile strength is increased as the aging time, the tensile strength is up to 810 MPa for aging time of 2 a. And the elongation is reduced as the aging time, the elongation is reduced from 11% to 6%. After 2.5 a aging, the tensile strength reduces to 750 MPa, and the elongation increases to 10%; after 3 a aging, the tensile strength increases to 800 MPa, and the elongation reduces to 8%.

关 键 词： 喷射沉积 超高强铝合金 自然时效 抗拉强度 伸长率

领　　域： [金属学及工艺] [一般工业技术] [金属学及工艺]