价格：56起
上海儒盟文实业有限公司
联系人：陈工
电话：13817207909
地址：上海市
产品规格：齐全
产品数量：88888888 个
包装说明：常规包装
关 键 词：7075铝合金，7075铝板，7075铝棒，7075厂家批发，7075价格，7075上海
发布时间：2016-11-07
Introduced by Alcoa in 1943, alloy 7075 has been the standard workhorse 7XXX series alloy within the aerospace industry ever since. It was the first successful Al-Zn-Mg-Cu high strength alloy using the beneficial effects of the alloying addition of chromium to develop good stress-corrosion cracking resistance in sheet products. Although other 7XXX alloys have since been developed with improved specific properties, alloy 7075 remains the baseline with a good balance of properties required for aerospace applications.
Alloy 7075 is available in bare and alclad sheet and plate product forms in the annealed state as well as several tempers of the T6, T73 and T76 types.
Alloy 7075 sheet and plate products have application throughout aircraft and aerospace structures where a combination of high strength with moderate toughness and corrosion resistance are required.
Typical applications are alclad skin sheet, structural plate components up to 4 inches in thickness and general aluminum aerospace applications.
ALCLAD 7075
Two side cladding. Nominal cladding thickness is 4% on gauges under 0.062 in. (1.57 mm); 2.5% on gauges over 0.062 in. (1.57 mm). Property values for one side clad material are similar (not shown).
All values are minimum long transverse mechanical properties except where noted.
Alloy 7075 sheet and plate products offer moderately good strength/toughness relationships and are the standard of comparison for more recent 7XXX series alloy developments. Alloy 7075 sheet and plate products are not offered with guaranteed minimum fracture toughness values.
TYPICAL FRACTURE TOUGHNESS VALUES Alloy 7075 Plate
COMPARISON OF AXIAL-STRESS NOTCH-FATIGUE DATA FOR ALLOYS 7075-T73XXX
2024-T351 AND 7475- T7351 PRODUCTS
The fatigue behavior of alloy 7075 plate products is shown in the accompanying figure comparing axial-stress notch-fatigue data of 2XXX and 7XXX series alloys.
Fatigue crack growth rates for plate products of 7075-T6 in constant amplitude tests are compared with products of alloys
2024, 7050, and 7475.
Fatigue crack growth behavior under spectrum loading is becoming increasingly important in the selection of alloys for fatigue critical aircraft structures. Various high strength aerospace alloys are compared for life prediction in flight hours using two types of fatigue spectrums; a wing root application (tension dominated), and a horizontal tail application (tension-compression).
SPECTRUM FATIGUE RANKING
Alloy 7075 has been thoroughly evaluated for corrosion resistance of atmospheric weathering, stress-corrosion cracking and exfoliation in all currently available tempers. These values have been used as a standard for comparison in the development of more recent high strength aerospace alloys. Within the 7XXX series of alloys,
resistance to general corrosion attack, SCC and exfoliation improves significantly in the overage tempers (T7 type) compared with peak strength tempers (T6).
Generally, the T76 type temper