Comparative study of microstructure and texture of cast and homogenized TX32 magnesium alloy after hot deformation
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
Standard
Comparative study of microstructure and texture of cast and homogenized TX32 magnesium alloy after hot deformation. / Dharmendra, C.; Rao, K. P.; Prasad, Y. V.R.K. et al.
in: Metals and Materials International, Jahrgang 21, Nr. 1, 01.01.2015, S. 134-146.Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - Comparative study of microstructure and texture of cast and homogenized TX32 magnesium alloy after hot deformation
AU - Dharmendra, C.
AU - Rao, K. P.
AU - Prasad, Y. V.R.K.
AU - Hort, N.
AU - Kainer, K. U.
PY - 2015/1/1
Y1 - 2015/1/1
N2 - The effect of homogenization on the hot deformation behavior and texture evolution of Mg-3Sn-2Ca (TX32) alloy is investigated. The cast-homogenized alloy samples were hot compressed in the temperature and strain rate ranges of 300–500 °C and 0.0003–10 s−1, respectively, and a processing map has been developed by using the flow stress data. The map revealed two dynamic recrystallization (DRX) domains with a peak efficiency of 44% at 360 °C/0.0003 s−1 (Domain 1) and 43% at 485 °C/0.1 s−1 (Domain 2). When compared with the map for as-cast condition, it is observed that both the domains moved towards higher temperatures although the shift of Domain 1 is more noticeable. The apparent activation energy values in the two domains and the regime of flow instability are nearly unchanged by homogenization, suggesting that Mg2Ca and CaMgSn particles in the microstructure are thermally stable. Specimens deformed under conditions in Domain 1 have high Schmid factors for {0001} (Formula presented.) basal slip and (Formula presented.) prismatic slip, while in Domain 2 the deformation progressed due to (Formula presented.) second-order pyramidal slip.
AB - The effect of homogenization on the hot deformation behavior and texture evolution of Mg-3Sn-2Ca (TX32) alloy is investigated. The cast-homogenized alloy samples were hot compressed in the temperature and strain rate ranges of 300–500 °C and 0.0003–10 s−1, respectively, and a processing map has been developed by using the flow stress data. The map revealed two dynamic recrystallization (DRX) domains with a peak efficiency of 44% at 360 °C/0.0003 s−1 (Domain 1) and 43% at 485 °C/0.1 s−1 (Domain 2). When compared with the map for as-cast condition, it is observed that both the domains moved towards higher temperatures although the shift of Domain 1 is more noticeable. The apparent activation energy values in the two domains and the regime of flow instability are nearly unchanged by homogenization, suggesting that Mg2Ca and CaMgSn particles in the microstructure are thermally stable. Specimens deformed under conditions in Domain 1 have high Schmid factors for {0001} (Formula presented.) basal slip and (Formula presented.) prismatic slip, while in Domain 2 the deformation progressed due to (Formula presented.) second-order pyramidal slip.
KW - alloys
KW - Homogenization
KW - Hot working
KW - Microstructure
KW - Texture
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=84921713984&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/74496785-1ba6-3234-a08c-b918ff7be87c/
U2 - 10.1007/s12540-015-1016-6
DO - 10.1007/s12540-015-1016-6
M3 - Journal articles
AN - SCOPUS:84921713984
VL - 21
SP - 134
EP - 146
JO - Metals and Materials International
JF - Metals and Materials International
SN - 1598-9623
IS - 1
ER -