Effect of minor additions of Al and Si on the mechanical properties of cast Mg-3Sn-2Ca alloys in low temperature range
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Effect of minor additions of Al and Si on the mechanical properties of cast Mg-3Sn-2Ca alloys in low temperature range. / Rao, K. P.; Suresh, K.; Hort, N. et al.
PRICM7. ed. / Jian-Feng Nie; Allan Morton. Trans Tech Publications Ltd, 2010. p. 635-638 (Materials Science Forum; Vol. 654-656).Research output: Contributions to collected editions/works › Article in conference proceedings › Research › peer-review
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TY - CHAP
T1 - Effect of minor additions of Al and Si on the mechanical properties of cast Mg-3Sn-2Ca alloys in low temperature range
AU - Rao, K. P.
AU - Suresh, K.
AU - Hort, N.
AU - Kainer, K. U.
N1 - Conference code: 7
PY - 2010
Y1 - 2010
N2 - The Mg-Sn-Ca alloys have shown superior creep properties compared to the creep resistant alloy AE42. In the present study, the effects of small amounts of Al and Si additions on the mechanical properties have been investigated on a Mg-3Sn-2Ca (TX32) alloy. The Al content in the selected alloys was 0.4 wt% and the Si content was varied from 0-0.8 wt% in steps of 0.2 wt.%. The alloys were cast in pre-heated permanent molds. Cylindrical specimens machined from the cast billets were tested in compression in the temperature range 25-250 °C at a strain rate of 0.0001 s-1. The alloy with 0.4 wt% Al shows an increased strength at all test temperatures compared with the TX32 base alloy. This is attributed to a solid solution strengthening of Al in Mg. The alloy with 0.4 wt% Al and 0.2 wt% Si has compressive strength that is closer to that of the TX32 alloy. However, increased additions of Si (from 0.4-0.8 wt%) reduce the strength, more significantly at higher temperatures.
AB - The Mg-Sn-Ca alloys have shown superior creep properties compared to the creep resistant alloy AE42. In the present study, the effects of small amounts of Al and Si additions on the mechanical properties have been investigated on a Mg-3Sn-2Ca (TX32) alloy. The Al content in the selected alloys was 0.4 wt% and the Si content was varied from 0-0.8 wt% in steps of 0.2 wt.%. The alloys were cast in pre-heated permanent molds. Cylindrical specimens machined from the cast billets were tested in compression in the temperature range 25-250 °C at a strain rate of 0.0001 s-1. The alloy with 0.4 wt% Al shows an increased strength at all test temperatures compared with the TX32 base alloy. This is attributed to a solid solution strengthening of Al in Mg. The alloy with 0.4 wt% Al and 0.2 wt% Si has compressive strength that is closer to that of the TX32 alloy. However, increased additions of Si (from 0.4-0.8 wt%) reduce the strength, more significantly at higher temperatures.
KW - Al and Si additions
KW - Compressive strength
KW - Magnesium-tin-calcium alloys
KW - Mechanical properties
KW - Temperature effect
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=77955482653&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.654-656.635
DO - 10.4028/www.scientific.net/MSF.654-656.635
M3 - Article in conference proceedings
AN - SCOPUS:77955482653
SN - 0878492550
SN - 9780878492558
T3 - Materials Science Forum
SP - 635
EP - 638
BT - PRICM7
A2 - Nie, Jian-Feng
A2 - Morton, Allan
PB - Trans Tech Publications Ltd
T2 - 7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
Y2 - 2 August 2010 through 6 August 2010
ER -