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Ageing Kinetics of Al-4.28Cu-1.60 Mg Alloy Micro-Alloyed with Titanium
https://orcid.org/http://orcid.org/0000-0002-7624-0022
In this study, ageing behaviour and precipitation kinetics of cast Al-4.28Cu-1.60 Mg alloy micro-alloyed with titanium (Ti) is studied. Age hardness of the alloy was observed to increase on addition of Ti. The increment of hardness of the alloy is more noticeable in solution heat treated alloys followed by water quenching. Trace addition of Ti retarded the natural peak ageing of Al–4.28wt.%Cu–1.60wt.%Mg alloy by 4 days. Trace addition Ti retarded the artificial peak ageing by 1 h at 350 °C for micro-alloyed alloys. Two exothermic peaks are observed in the DSC curves for all the alloys. The first exothermic peak temperature was within 250–300 °C and that for the second was within 450–550 °C. Trace addition of Ti does not influence the precipitation reaction in the studied alloy compositions. The minimum energy required for chemical transformation has increased on trace addition of Ti. XRD analyses of the peak aged cast alloys confirmed the presence of the CuAl2 and TiAl3 phases in the peak aged micro-alloyed alloys which contribute to the increase in hardness.
Ageing Kinetics of Al-4.28Cu-1.60 Mg Alloy Micro-Alloyed with Titanium
https://orcid.org/http://orcid.org/0000-0002-7624-0022
In this study, ageing behaviour and precipitation kinetics of cast Al-4.28Cu-1.60 Mg alloy micro-alloyed with titanium (Ti) is studied. Age hardness of the alloy was observed to increase on addition of Ti. The increment of hardness of the alloy is more noticeable in solution heat treated alloys followed by water quenching. Trace addition of Ti retarded the natural peak ageing of Al–4.28wt.%Cu–1.60wt.%Mg alloy by 4 days. Trace addition Ti retarded the artificial peak ageing by 1 h at 350 °C for micro-alloyed alloys. Two exothermic peaks are observed in the DSC curves for all the alloys. The first exothermic peak temperature was within 250–300 °C and that for the second was within 450–550 °C. Trace addition of Ti does not influence the precipitation reaction in the studied alloy compositions. The minimum energy required for chemical transformation has increased on trace addition of Ti. XRD analyses of the peak aged cast alloys confirmed the presence of the CuAl2 and TiAl3 phases in the peak aged micro-alloyed alloys which contribute to the increase in hardness.
Ageing Kinetics of Al-4.28Cu-1.60 Mg Alloy Micro-Alloyed with Titanium
https://orcid.org/http://orcid.org/0000-0002-7624-0022
In this study, ageing behaviour and precipitation kinetics of cast Al-4.28Cu-1.60 Mg alloy micro-alloyed with titanium (Ti) is studied. Age hardness of the alloy was observed to increase on addition of Ti. The increment of hardness of the alloy is more noticeable in solution heat treated alloys followed by water quenching. Trace addition of Ti retarded the natural peak ageing of Al–4.28wt.%Cu–1.60wt.%Mg alloy by 4 days. Trace addition Ti retarded the artificial peak ageing by 1 h at 350 °C for micro-alloyed alloys. Two exothermic peaks are observed in the DSC curves for all the alloys. The first exothermic peak temperature was within 250–300 °C and that for the second was within 450–550 °C. Trace addition of Ti does not influence the precipitation reaction in the studied alloy compositions. The minimum energy required for chemical transformation has increased on trace addition of Ti. XRD analyses of the peak aged cast alloys confirmed the presence of the CuAl2 and TiAl3 phases in the peak aged micro-alloyed alloys which contribute to the increase in hardness.
Ageing Kinetics of Al-4.28Cu-1.60 Mg Alloy Micro-Alloyed with Titanium
J. Inst. Eng. India Ser. D
Bhuyan, Manash (Autor:in) / Borah, Anil (Autor:in)
Journal of The Institution of Engineers (India): Series D ; 105 ; 305-311
01.04.2024
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Ageing Kinetics of Al-4.28Cu-1.60 Mg Alloy Micro-Alloyed with Titanium
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