TY - CHAP

T1 - High temperature deformation of cast ZW11 magnesium alloy with very large grain size

AU - Rao, K. P.

AU - Bagheripoor, M.

AU - Dieringa, H.

AU - Hort, N.

N1 - Conference code: 13

PY - 2017

Y1 - 2017

N2 - Magnesium (Mg) alloys are considered for biomedical applications due to their matching bone density and biodegradable/abioabsorable nature. Mg-1% Zinc-1% Yttrium (ZW11) alloy was cast using a direct chill slow cooling process to obtain dense ingot with uniform composition. However, the resultant alloy developed a very coarse grained microstructure with a grain size in the range of 2,600 to 4,000 μm (2.6-4.0 mm). The hot working behavior of ZW11 alloy has been investigated using compression tests in the temperature and strain rate ranges of 340-540 °C and 0.0003 - 10 s-1 to evaluate the optimum processing parameters. A processing map has been developed on the basis of the flow stress data. The processing map reveals a window of workability in the temperature and strain rate ranges of 460-540 °C and 0.0003-10 s-1 and regimes of flow instability. The microstructures of the deformed alloy provided support to the processing map.

AB - Magnesium (Mg) alloys are considered for biomedical applications due to their matching bone density and biodegradable/abioabsorable nature. Mg-1% Zinc-1% Yttrium (ZW11) alloy was cast using a direct chill slow cooling process to obtain dense ingot with uniform composition. However, the resultant alloy developed a very coarse grained microstructure with a grain size in the range of 2,600 to 4,000 μm (2.6-4.0 mm). The hot working behavior of ZW11 alloy has been investigated using compression tests in the temperature and strain rate ranges of 340-540 °C and 0.0003 - 10 s-1 to evaluate the optimum processing parameters. A processing map has been developed on the basis of the flow stress data. The processing map reveals a window of workability in the temperature and strain rate ranges of 460-540 °C and 0.0003-10 s-1 and regimes of flow instability. The microstructures of the deformed alloy provided support to the processing map.

KW - Hot deformation

KW - Magnesium alloy

KW - Microstructure.

KW - Processing map

KW - Engineering

UR - http://www.scopus.com/inward/record.url?scp=85009115071&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/KEM.725.232

DO - 10.4028/www.scientific.net/KEM.725.232

M3 - Article in conference proceedings

AN - SCOPUS:85009115071

SN - 9783035710243

T3 - Key Engineering Materials

SP - 232

EP - 237

BT - Advances in Engineering Plasticity and its Application XIII

A2 - Yoshida, Fusahito

A2 - Hamasaki, Hiroshi

PB - Trans Tech Publications Ltd

T2 - 13th Asia-Pacific Symposium on Engineering Plasticity and its Applications, AEPA 2016

Y2 - 4 December 2016 through 8 December 2016

ER -