Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 801, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.140399
Keywords
Mg-Al-Ca-Mn alloy; Rolling; Formability; Tensile property; Microstructure; Texture
Categories
Funding
- JSPS KAKENHI Grant [JP19K15321, JP18H03837]
- AMADA FOUNDATION [AF-2019037-C2]
- Advanced Low Carbon Technology Research and Development Program (ALCA) [12102886]
- Nagaoka University of Technology (NUT) Presidential Research Grant
- National Natural Science Foundation [51971075]
Ask authors/readers for more resources
The effect of solution treatment temperature on the room-temperature stretch formability and ductility of Mg-Al-Ca-Mn alloy sheet is significant. Higher temperature solution treatment results in sparse and uniform particle distribution, significantly improving the texture performance and elongation of the sheet.
Various solution-treatments were applied on a rapidly solidified and subsequently rolled Mg-7.50Al-1.07Ca0.17Mn (mass%) alloy sheet, and a room-temperature stretch formability, tensile properties, microstructures, and textures of the solution-treated sheets have been investigated. Although the solution-treatment at 400 ?C gives high strengths, the sheet shows poor room-temperature stretch formability with the Index Erichsen value of 4.8 mm due to densely dispersed second phase particles. Also, the particles tend to distribute to the rolling direction, leading to limited elongation to failure of 11.0% along the transverse direction. The solution-treatment at higher temperature leads to the sparse and relatively uniform dispersion of the particles. This results in the significant improvement in the room-temperature stretch formability and ductility. The Index Erichsen increases to 6.8 mm by the solution-treatment at 450 degrees C for 4 h, and the sheet shows large elongation to failure of 19.1% and 17.1% along the rolling and transverse directions, respectively. The sheet also exhibits high strengths and in plane isotropic properties, tensile strength over 320 MPa and 0.2% proof stress of similar to 180 MPa could be obtained due to fine grain structure with the average grain size of 9.5 mu m.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available