Unexpected formation of hydrides in heavy rare earth containing magnesium alloys
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In: Journal of Magnesium and Alloys, Vol. 4, No. 3, 01.09.2016, p. 173-180.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Unexpected formation of hydrides in heavy rare earth containing magnesium alloys
AU - Huang, Yuanding
AU - Yang, Lei
AU - You, Sihang
AU - Gan, Weimin
AU - Kainer, Karl Ulrich
AU - Hort, Norbert
PY - 2016/9/1
Y1 - 2016/9/1
N2 - Mg–RE (Dy, Gd, Y) alloys show promising for being developed as biodegradable medical applications. It is found that the hydride REH2 could be formed on the surface of samples during their preparations with water cleaning. The amount of formed hydrides in Mg–RE alloys is affected by the content of RE and heat treatments. It increases with the increment of RE content. On the surface of the alloy with T4 treatment the amount of formed hydride REH2 is higher. In contrast, the amount of REH2 is lower on the surfaces of as-cast and T6-treated alloys. Their formation mechanism is attributed to the surface reaction of Mg–RE alloys with water. The part of RE in solid solution in Mg matrix plays an important role in influencing the formation of hydrides.
AB - Mg–RE (Dy, Gd, Y) alloys show promising for being developed as biodegradable medical applications. It is found that the hydride REH2 could be formed on the surface of samples during their preparations with water cleaning. The amount of formed hydrides in Mg–RE alloys is affected by the content of RE and heat treatments. It increases with the increment of RE content. On the surface of the alloy with T4 treatment the amount of formed hydride REH2 is higher. In contrast, the amount of REH2 is lower on the surfaces of as-cast and T6-treated alloys. Their formation mechanism is attributed to the surface reaction of Mg–RE alloys with water. The part of RE in solid solution in Mg matrix plays an important role in influencing the formation of hydrides.
KW - Heat treatment
KW - Hydride
KW - Magnesium alloy
KW - Microstructure
KW - Rare earths
KW - Engineering
UR - http://www.scopus.com/inward/record.url?scp=84989829874&partnerID=8YFLogxK
U2 - 10.1016/j.jma.2016.08.002
DO - 10.1016/j.jma.2016.08.002
M3 - Journal articles
AN - SCOPUS:84989829874
VL - 4
SP - 173
EP - 180
JO - Journal of Magnesium and Alloys
JF - Journal of Magnesium and Alloys
SN - 2213-9567
IS - 3
ER -