Improving the fatigue strength of A7N01 aluminum alloy
2019110 · The tensile and fatigue specimens were prepared into shapes of round stick with a gauge length of 18 mm and a diameter of 5 mm. Uniaxial tensile tests were carried out on an Instron 8862 testing machine operating at a strain rate of 10 −3 s −1 at RT. Symmetric tension-compression high-cycle fatigue tests were carried out on the GPS20
Effect of charging hydrogen on the tensile properties of
201913 · A7N01 aluminum alloy is widely used in rail transit industry due to its excellent comprehensive mechanical properties. However, due to its sensitivity to stress corrosion cracking (SCC), especially in hydrogen-containing moisture environment, the mechanical properties of hydrogen-charged A7N01 aluminum alloy friction stir welding
Abstract: In this paper, an Al-Zn-Mg-Cu alloy with a small amount of Er and Zr added was used as the research object. The homogenization annealing was carried out, and the 7N01 aluminum alloy was used at 300 °C, 350 °C, 400 °C, 450 °C and 0.1 s-1, 1 s-1, 10 s-1 deformation conditions by Gleeble-3500 thermal simulator. Optical Microscopy (OM),
خطوات الدهان لاول مره - تعلم كيفيه الدهان خطوه ...
202339 · طريقة التنفيذ: اولاً الرشمة : هى عبارة عن ازالة الزيادات من على الحوائط بسكين معجون صلب و حجر جلخ للزلط و ربم شاكوش (مطرقة) و بعد ذلك نقوم بتنظيف الحائط اى كنسه بالمكنسة اليدوى (المقشة) و ازالة ...