Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 776, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.139018
Keywords
Mg-Al-Mn-Ca alloy; Gravity-cast; Tensile property; Creep property; Dynamic precipitation
Categories
Funding
- JSPS KAKENHI [JP18H03837, JP19K15321]
- Advanced Low Carbon Technology Research and Development Program (ALCA) [12102886]
- Nagaoka University of Technology (NUT) Presidential Research Grant
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Effect of Si content on microstructures, tensile properties, and creep properties in a gravity-cast Mg-6Al-0.4Mn-2Ca (wt.%, AMX6042) alloy has been investigated. High content of Si addition increases the ductility of the AMX6042 alloy without large loss of strengths; however, addition of Si over 0.6 wt.% decreases fraction of (Mg,Al)(2)Ca phases significantly. Moreover, such high content of Si promotes formation of Mg17Al12 phases, leading to poor creep properties. Although addition of Si tends to decrease fraction of (Mg,Al)(2)Ca phases and promote formation of Mg17Al12 phases, good creep properties could be kept up to 0.47 wt.% Si addition.
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