If aluminium alloy is not quenched within the minimum time allowed after heat treatment is it will be
- subject to corrosion.
- malleable.
- brittle.
Explanation from PART66Online
After solution treatment the part must be quenched quickly so the alloying elements stay trapped in solution. If quenching is delayed, precipitates form preferentially at the grain boundaries, leaving the alloy prone to intergranular corrosion. The fault is corrosion susceptibility rather than the material becoming brittle or malleable.
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diaandrita asked · 23 Mar 2014
this question makes me confused
if Al alloy not quenched are more prone to intergranular corrosion aren't they? Please give me explanation
Community Comments (6)
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chevychase
3 Apr 2014
i agree , subject to intergranular corrosion. to make brittle would be to quench to fast.
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diaandrita
4 Apr 2014
Yes i was reading on a book and its said must be quenched less than 10 second to avoid corrosion and aluminium become very soft until finally aged and hard. Cimw.
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PART66Online
4 Apr 2014
Corrected.
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PART66Online
4 Apr 2014
P.S. Would be cool if you will provide some reference.
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diaandrita
5 Apr 2014
i actually got from my course book but you can try to read this navyaviation.tpub.com/14018/css/14018...
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PART66Online
5 Apr 2014
Perfect. Thanks.
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