About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
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Alloy Phase Transformations at Elevated Temperatures
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| Presentation Title |
High temperature deformation response of Al-Cu-Mn-Zr (ACMZ) alloys. |
| Author(s) |
Baipalli Latha, Samarendra Roy, Shibayan Roy |
| On-Site Speaker (Planned) |
Baipalli Latha |
| Abstract Scope |
Present study deals with the effect of thermo-mechanical processing on microstructural evolution of ACMZ alloys and subsequent impact on high temperature deformation by means of hot compression. As-cast alloy was uniaxially hot forged, and hot compressed along forging direction over 200°C to 400°C in 50°C intervals at 1s⁻¹ strain rate. True stress-strain curves reveal temperature-dependent flow behaviour dominated by dynamic recovery at high temperatures. XRDLPA shows a significant increase in crystallite size from the forged specimen to all deformed ones, and a decrease in micro-strain with increasing temperature, followed by a slight increase at 400°C. Compression at 400°C, 1s⁻¹ reveals Al2Cu spherical precipitates and <011>|| compression direction texture while lower temperature compression leads to elongated grains along secondary tensile stresses. Lower temperature deformation produces mostly deformation texture which changes at 350°C and higher to recrystallization texture confirming softening through recovery/recrystallization at higher temperatures. |