TY - GEN
T1 - THE EFFECT OF MULTI-STAGE AGE TREATMENT ON MECHANICAL PROPERTIES OF 7075 AL ALLOY
AU - Rahman, A. H.M.E.
AU - Abu-Mahfouz, Issam
AU - Banerjee, Amit
AU - Wisniewski, Johnmark
N1 - Publisher Copyright:
Copyright © 2022 by ASME.
PY - 2022
Y1 - 2022
N2 - One of the widely used aerospace alloys is 7075 aluminum alloy (AA) because of its high tensile and compressive strength and good response to exfoliation corrosion. A solution heat treatment followed by artificial ageing is known as T6 temper designation was initially used to obtain peak strength for 7075 AA. The artificial aging, done at 115°C to 130°C (T6 temper), increases strength of 7075 AA to a peak level then decreases, however, resistance to stress-corrosion cracking is decreased. Recent trend shows that the strength can be increased more by applying multi-stage aging process. This research focuses on the effect of multiple aging temperature, time on the mechanical properties of 7075 aluminum alloys. ASTM standard coupons were machined from an as received aluminum plate and applied different combination of RRA age treatment. The initial results on mechanical properties are reported. The maximum tensile strength obtained was over 100 ksi for a double RRA at 200°C for 10 min. The hardness was measured using a micro hardness tester. The Vickers hardness numbers were within the range in literatures.
AB - One of the widely used aerospace alloys is 7075 aluminum alloy (AA) because of its high tensile and compressive strength and good response to exfoliation corrosion. A solution heat treatment followed by artificial ageing is known as T6 temper designation was initially used to obtain peak strength for 7075 AA. The artificial aging, done at 115°C to 130°C (T6 temper), increases strength of 7075 AA to a peak level then decreases, however, resistance to stress-corrosion cracking is decreased. Recent trend shows that the strength can be increased more by applying multi-stage aging process. This research focuses on the effect of multiple aging temperature, time on the mechanical properties of 7075 aluminum alloys. ASTM standard coupons were machined from an as received aluminum plate and applied different combination of RRA age treatment. The initial results on mechanical properties are reported. The maximum tensile strength obtained was over 100 ksi for a double RRA at 200°C for 10 min. The hardness was measured using a micro hardness tester. The Vickers hardness numbers were within the range in literatures.
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U2 - 10.1115/IMECE2022-95883
DO - 10.1115/IMECE2022-95883
M3 - Conference contribution
AN - SCOPUS:85148476048
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Advanced Materials
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2022 International Mechanical Engineering Congress and Exposition, IMECE 2022
Y2 - 30 October 2022 through 3 November 2022
ER -