英語翻譯鋁密度小,質量輕.純鋁的可塑性很髙,可進行各種壓力加工,但純鋁強度低,不能做結構材料,人們發現向鋁中加入適量的某

題目：

英語翻譯
鋁密度小,質量輕.純鋁的可塑性很髙,可進行各種壓力加工,但純鋁強度低,不能做結構材料,人們發現向鋁中加入適量的某些合金元素,再經冷加工或熱處理製成鋁合金,可以大幅度地提髙強度.強度極限值可提高至50〜60公斤/平方毫米,相當於低合金鋼的強度
鋁合金因具有質輕、強度髙、良好的導電導熱性、易於加工變形,無毒環保等優良的特點,且鋁資源豐富,因而鋁及其合金的用途是相當廣泛的.研究具有高強、高韌性的鋁銅合金是當今鋁合金研究領域的一個熱門.
鋁中最常加入的合金元素是銅（Cu）、鎂（Mg)、矽（Si)、錳（Mn〉、鋅（Zn),在各種鋁合金中,Al-Cu系合金具有較髙的強韌化潛力.通過熔煉鑄造工藝得到鋁合金鑄件,由於低的氣體含量,可以通過對鑄件進行充分的固溶處理來實現合金元素的固溶強化,提髙合金的力學性能.固溶處理之後又可以通過時效強化,進一步提髙鑄件的強度和硬度.本實驗以鋁銅合金爲研究對象,通過熔煉Al-50%Cu合金與純鋁得到含銅5%的鋁合金,將得到的鑄件經過不同時間的固溶和時效熱處理,通過觀察金相,得到熱處理時間對合金的組織和性能的影響規律.
關鍵詞:鋁銅合金、熔煉、固溶處理、時效處理.
PS：請不要用在線翻譯或者翻譯工具來忽悠我.要這樣的我自己也能弄.
真心求翻譯.

解答：

Aluminium is small in density with light quality. Pure aluminium possesses high plasticity thus could be fabricated under pressures, yet is low in intensity, which makes it unable to be served as a structure material. It is discovered that mixture with some alloying elements in appropriate amount following with cold/hot machining to be made into alufer(或：aluminium alloy) may improve its density significantly. Thereon the density extreme of it could be raised to 50 to 60 kilograms per square millimeter, equaling to high-intensity aluminum alloy made from low alloy steel.
With superiorities as light quality, high intensity, good electrical/temperature conductivity, easiness to be fabricated/transformed, innocuity besides environment friendliness, etc, and being abundant in resource, applications of aluminium as well as its alloy cover a large range. Therefore, it is, as for research on aluminium alloy at present, a major topic to study aluminium-copper alloy with high intensity plus good tenacity.
Those alloying elements mostly added are copper(Cu), magnesium(Mg), silicon(Si), manganese(Mn) and zinc(Zn). Among alufers, Al-Cu system alloys have high potential of toughness. Aluminium alloy foundries are made with smelting and casting techniques and, considering gas content at low level, solution strengthening for alloy elements can be achieved while mechanical properties of the alloy could be improved by sufficient solution treatment for the foundries. Then intensity and rigidity of the foundries may be further improved with aging strengthening after solution treatment. This study does get aluminium alloy contained with 5% of copper through smelting Al-50%Cu alloy and pure aluminium, taking as aluminium-copper alloy as subjects and, reach to impact regulations of hot-machining time(或：period) on the texture and properties of the alloy through observation for metallographic phase.
Keywords: aluminum-copper alloy, smelting, solution treatment, aging strengthening
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