EARLY ACTION (EA) I AND II. In this non-binding application program, a student usually applies EA I on or before the first of November (sometimes Nov. 15) and receives an admission decision by the middle of December.
Among the metals affected by this type of corrosion are stainless steel, certain magnesium alloys, and the copper-bearing aluminum alloys. Intergranular corrosion occurs in certain grades of stainless steel when the steel is heated, as in welding. Brittleness results, causing the metal to crack near the weld. For this reason, a post-weld heat treatment is needed before reinstalling stainless steel parts that have been welded.
What is fretting corrosion? Fretting corrosion refers to the deterioration at the interface between contacting surfaces as the result of corrosion and slight oscillatory slip between the two surfaces. Fretting corrosion are expected in many tight-fitting parts that are designed not to slip against each other, but in the presence of vibration and pressure fluctuation, these parts do slip against each other such as bolted or riveted parts that vibrate. Mechanisms.