IMPROVEMENT OF MECHANICAL PROPERTIES AND SCC RESISTANCE OF AL-7075 BY ROLLING AND TWO STEPS AGING

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FOULADFAR H.R.; HASHEMI BABAK; YOUNESI MOUSA

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Journal: Journal of Advanced Processes in Materials Engineering Year:2009 | Volume:3 | Issue:1 (8) Page(s): 51-57

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Title

IMPROVEMENT OF MECHANICAL PROPERTIES AND SCC RESISTANCE OF AL-7075 BY ROLLING AND TWO STEPS AGING

Author(s)

FOULADFAR H.R. | HASHEMI BABAK | YOUNESI MOUSA | Issue Writer Certificate

Keywords

TWO STEP AGINGQ4

ANODIC DISSOLUTIONQ3

SCCQ4

AL-7075Q2

Abstract

Two steps aging is a novel heat treatment for 7000 series a Aluminum which improves the stress corrosion cracking (SCC) resistance of these alloys without any considerable influence on their strength. The heat treatment included a post-quenching pre-strain of 5%, a high-temperature aging at 200oC for several minutes and a subsequent low-temperature aging at 120oC for24 h as conventional T6 treatment. This research concentrates on improvement of this heat treatment for AL-7075 alloy. One stage rolling prior to high temperature aging and also one stage before the second step of aging resulted in simultaneous increasing the strength and SCC resistance of the alloy similar to those obtained by T6 and T73 treatments respectively. Strain induced at the first step of rolling caused more forming h phase particles and the second rolling led to breaking the grain boundary precipitates and increasing the anodic surfaces which subsequently reduced the dissolution of the particles.

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APA: Copy

FOULADFAR, H.R., HASHEMI, BABAK, & YOUNESI, MOUSA. (2009). IMPROVEMENT OF MECHANICAL PROPERTIES AND SCC RESISTANCE OF AL-7075 BY ROLLING AND TWO STEPS AGING. ADVANCED PROCESSES IN MATERIALS, 3(1 (8)), 51-57. SID. https://sid.ir/paper/172478/en

Vancouver: Copy

FOULADFAR H.R., HASHEMI BABAK, YOUNESI MOUSA. IMPROVEMENT OF MECHANICAL PROPERTIES AND SCC RESISTANCE OF AL-7075 BY ROLLING AND TWO STEPS AGING. ADVANCED PROCESSES IN MATERIALS[Internet]. 2009;3(1 (8)):51-57. Available from: https://sid.ir/paper/172478/en

IEEE: Copy

H.R. FOULADFAR, BABAK HASHEMI, and MOUSA YOUNESI, “IMPROVEMENT OF MECHANICAL PROPERTIES AND SCC RESISTANCE OF AL-7075 BY ROLLING AND TWO STEPS AGING,” ADVANCED PROCESSES IN MATERIALS, vol. 3, no. 1 (8), pp. 51–57, 2009, [Online]. Available: https://sid.ir/paper/172478/en

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