Details

Autor(en) / Beteiligte

• Zindal, A.
• Jain, J.
• Prasad, R.
• Singh, S.S.
• Sarvesha, R.
• Cizek, P.
• Barnett, M.R.

Titel

Effect of heat treatment variables on the formation of precipitate free zones (PFZs) in Mg-8Al-0.5Zn alloy

Ist Teil von

• Materials characterization, 2018-02, Vol.136, p.175-182

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The present study is focussed on investigating the effect of heat treatment variables on the formation of precipitate free zones (PFZs) in the AZ80 Mg alloy. The effect of solutionizing temperature, quenching media, aging temperature and time on the PFZ development has been systematically examined. Scanning electron microscopy and nanoindentation were employed to characterize the PFZ regions. Electron probe micro analysis (EPMA) was used to examine the role of solute depletion in the formation of these zones. Moreover, the estimation of vacancy concentration profiles near the grain boundary was used to investigate the role of vacancy depletion. The solute depletion is found to be the dominant mechanism in the development of PFZ regions as compared to vacancy. •The effect of heat treatment variables on the development of PFZs in the AZ80 Mg alloy has been systematically examined.•PFZ width is found to be strongly dependant on aging temperature as compared to aging time.•The PFZ width in the AZ80 alloy is found to be weakly dependant on the solution temperature and quenching rate.•The solute depletion is found to be the dominant factor in explaining the evolution of PFZ width.