H. Ataiwi Ali
Abstract
The aging kinetics and the coupling between plastic deformation andsubsequent aging on a set of Al-Zn-Mg alloys having different Zn-content(6.33%, 7%, 7.5% and 8%) are investigated. ...
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The aging kinetics and the coupling between plastic deformation andsubsequent aging on a set of Al-Zn-Mg alloys having different Zn-content(6.33%, 7%, 7.5% and 8%) are investigated. These alloys are produced withan extreme care during melting, alloying and sampling where the bestconditions of alloying are adopted .The response to multi thermomechanicaltreatments practices are reported, where the combination between rollingpractice and aging is monitored by hardness measurements, tensile, impacttoughness measurements in addition to x-ray diffraction testing. The studyproves that, the zinc percent has a very important role in the precipitationhardening sequence of tested alloy; this effect is concentrated on the speedingup the kinetics of hardening by increasing the density and stability of GPzones and μ'-phase.
