Bolt load retention and creep response of AS41 alloyed with 0.15% Ca
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Bolt load retention and creep response of AS41 alloyed with 0.15% Ca. / Anopuo, Okechukwu; Huang, Yuanding; Hort, Norbert et al.
in: SAE International Journal of Materials and Manufacturing, Jahrgang 3, Nr. 1, 08.2010, S. 202-210.Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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TY - JOUR
T1 - Bolt load retention and creep response of AS41 alloyed with 0.15% Ca
AU - Anopuo, Okechukwu
AU - Huang, Yuanding
AU - Hort, Norbert
AU - Dieringa, Hajo
AU - Kainer, Karl Ulrich
PY - 2010/8
Y1 - 2010/8
N2 - Understanding the creep and bolt load retention (BLR) behaviour of promising Mg-Al alloys are crucial to developing elevated temperature resistance alloys. This is especially true for elevated temperature automotive applications with a prevalence of bolted joints. In this study, creep and fastener clamp load response of Mg-Al alloy AS41 was investigated and compared to that of Mg4Al and AS41 micro-alloyed with 0.15% Ca. A compliance-creep approach was used to model the response of these Mg-Al alloys at bolted joints. The equation prediction of the BLR response and experimental results are in good agreement. AS41+0.15 Ca shows improved creep and BLR properties up to 175 °C. A correlation between the microstructures, creep and BLR results reveal that the formation of a ternary CaMgSi phase is responsible for the improved elevated temperature behaviour.
AB - Understanding the creep and bolt load retention (BLR) behaviour of promising Mg-Al alloys are crucial to developing elevated temperature resistance alloys. This is especially true for elevated temperature automotive applications with a prevalence of bolted joints. In this study, creep and fastener clamp load response of Mg-Al alloy AS41 was investigated and compared to that of Mg4Al and AS41 micro-alloyed with 0.15% Ca. A compliance-creep approach was used to model the response of these Mg-Al alloys at bolted joints. The equation prediction of the BLR response and experimental results are in good agreement. AS41+0.15 Ca shows improved creep and BLR properties up to 175 °C. A correlation between the microstructures, creep and BLR results reveal that the formation of a ternary CaMgSi phase is responsible for the improved elevated temperature behaviour.
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=85072369669&partnerID=8YFLogxK
U2 - 10.4271/2010-01-0404
DO - 10.4271/2010-01-0404
M3 - Journal articles
AN - SCOPUS:85072369669
VL - 3
SP - 202
EP - 210
JO - SAE International Journal of Materials and Manufacturing
JF - SAE International Journal of Materials and Manufacturing
SN - 1946-3979
IS - 1
T2 - World Congress and Exhibition SAE 2010
Y2 - 13 April 2010 through 13 April 2010
ER -