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现代飞机用材中铝合金所占比例甚大,战斗机约为30～40％,民用机约为70％。其中主要是2000系Al-Cn-Mg及7000系Al-Zn-Mg-Cu合金。7000系合金的原型为ESD超硬铝,添加微量元素和改进热处理技术后,其工艺性和断裂韧性得到改善,为世界各国所选用,这段发展小史颇为有趣。 1916年,德国齐柏林式飞艇舰队袭击伦敦被击坠多艘,这种硬式飞艇以硬铝为骨架。日本住友公司通过海军之手,辗转弄到一块长约20厘米的V形残骸碎片。1920年,日本开始工业化生产硬铝。 1935年,住友公司受日本海军委托,密秘研究一种抗拉强度超过50公斤/毫米~2的超硬铝,由五十岚勇负责此项工作。当时铝合金中强度最高者为德国的SANDER及英国的E合金,均为具有时效性能的Al-Zn-Mg合金,自
The proportion of modern aircraft aluminum alloy accounts for a large proportion of fighters about 30 ~ 40%, about 70% of civilian aircraft. Mainly 2000 series Al-Cn-Mg and 7000 series Al-Zn-Mg-Cu alloy. 7000 alloy prototype for the ESD super-hard aluminum, add trace elements and improve the heat treatment technology, its technology and fracture toughness improved for all countries in the world, this development history is quite interesting. In 1916, the German Zeppelin fleet attacked London and was shot down by several ships. The hard-airship was made of duralumin. Sumitomo Japan through the hands of the Navy, removed a V-shaped debris about 20 centimeters debris. In 1920, Japan began industrial production of hard aluminum. In 1935, Sumitomo Corporation commissioned by the Japanese Navy, secret study of a tensile strength of more than 50 kg / mm ~ 2 of super-hard aluminum, by Arashi is responsible for this work. At that time, the highest strength aluminum alloy for the German SANDER and the British E alloy, are aging properties of Al-Zn-Mg alloy, since