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前言航空、航天技术的发展,迫切要求研究强度更高的铸造铝合金,以减轻结构重量。据计算,在飞机上每减轻一克重量相当于一克黄金的价值。近十多年来国外先后研究了一批高强度铸造铝合金,其抗拉强度由294MPa 提高到490MPa。
Preface The development of aerospace and aerospace technology urgently needs to study the strength of the cast aluminum alloy to reduce the weight of the structure. It has been calculated that for every 1 gram of weight lost on an airplane equates to one gram of gold worth. Nearly a decade abroad has studied a number of high-strength cast aluminum alloy, the tensile strength increased from 294MPa to 490MPa.