An Investigation on Hot Tearing of Mg-4.5Zn-(0.5Zr) Alloys with Y Additions
Research output: Journal contributions › Journal articles › Research › peer-review
Standard
In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 46, No. 5, 01.05.2015, p. 2108-2118.
Research output: Journal contributions › Journal articles › Research › peer-review
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - An Investigation on Hot Tearing of Mg-4.5Zn-(0.5Zr) Alloys with Y Additions
AU - Wang, Zhi
AU - Song, Jiangfeng
AU - Huang, Yuanding
AU - Srinivasan, Amirthalingam
AU - Liu, Zheng
AU - Kainer, Karl Ulrich
AU - Hort, Norbert
PY - 2015/5/1
Y1 - 2015/5/1
N2 - In this work, the hot tearing susceptibility (HTS) of Mg-4.5Zn-xY (x = 0, 0.4, 0.9, 2 wt pct) alloys is investigated using constrained rod casting apparatus equipped with a load cell and data acquisition system. The effect of grain refinement by Zr addition on the HTS has also been investigated. The results show that the HTS first increases with increasing the Y content, reaches the maximum at 0.9 wt pct Y, and then reduces with further increase in the Y content to 2.0 wt pct. The high HTS observed in the alloys with 0.4 and 0.9 wt pct Y is attributed to their coarse columnar grains and their large freezing ranges. The results also suggest that the resistance to the hot tearing can apparently be improved by increasing the initial mold temperature. In addition, a fine microstructure reduces the HTS. Numerical simulations using ProCAST software on HTS of Mg-4.5Zn-xY alloys are in good agreement with the experimental results.
AB - In this work, the hot tearing susceptibility (HTS) of Mg-4.5Zn-xY (x = 0, 0.4, 0.9, 2 wt pct) alloys is investigated using constrained rod casting apparatus equipped with a load cell and data acquisition system. The effect of grain refinement by Zr addition on the HTS has also been investigated. The results show that the HTS first increases with increasing the Y content, reaches the maximum at 0.9 wt pct Y, and then reduces with further increase in the Y content to 2.0 wt pct. The high HTS observed in the alloys with 0.4 and 0.9 wt pct Y is attributed to their coarse columnar grains and their large freezing ranges. The results also suggest that the resistance to the hot tearing can apparently be improved by increasing the initial mold temperature. In addition, a fine microstructure reduces the HTS. Numerical simulations using ProCAST software on HTS of Mg-4.5Zn-xY alloys are in good agreement with the experimental results.
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=84939961063&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/89f88831-7fef-3296-8a6a-9ca2976f03e6/
U2 - 10.1007/s11661-015-2755-1
DO - 10.1007/s11661-015-2755-1
M3 - Journal articles
AN - SCOPUS:84939961063
VL - 46
SP - 2108
EP - 2118
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
SN - 1073-5623
IS - 5
ER -