TY - JOUR
T1 - Unusual solidification behavior of a Zr-Cu-Ni-Al bulk glassy alloy made from low-purity Zr
AU - Louzguine-Luzgin, Dmitri V.
AU - Suryanarayana, C.
AU - Saito, Takanobu
AU - Zhang, Qingsheng
AU - Chen, Na
AU - Saida, Junji
AU - Inoue, Akihisa
N1 - Funding Information:
This work was supported by the Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology as well as by Grant-in-Aid “Priority Area on Science and Technology of Microwave-Induced, Thermally Non-Equilibrium Reaction Field” N: 18070001 from Ministry of Education, Culture, Sports, Science and Technology, Japan. One of the authors (C.S.) is thankful to WPI-AIMR, Tohoku University for the offer of a Visiting Professorship.
PY - 2010/8
Y1 - 2010/8
N2 - This paper reports on the unusual solidification behavior of Zr55Cu30Al10Ni5 bulk glassy alloy produced using low-purity Zr in which both primary and eutectic-type structural constituents were formed simultaneously during solidification of the melt. Additionally, two different types of primary crystalline phases were observed. One of them was cF96 and contained all the four constituent elements. Reasons for these observations have been related to the presence of impurities in the alloy leading to inhomogeneous nucleation and consequent modification of the crystallization behavior. The structure and thermal stability of the samples were studied using X-ray diffraction, scanning and transmission electron microscopy, as well as differential scanning calorimetry methods. Although the cast alloys made with low-purity Zr showed somewhat decreased glass-forming ability, their mechanical strength was still high.
AB - This paper reports on the unusual solidification behavior of Zr55Cu30Al10Ni5 bulk glassy alloy produced using low-purity Zr in which both primary and eutectic-type structural constituents were formed simultaneously during solidification of the melt. Additionally, two different types of primary crystalline phases were observed. One of them was cF96 and contained all the four constituent elements. Reasons for these observations have been related to the presence of impurities in the alloy leading to inhomogeneous nucleation and consequent modification of the crystallization behavior. The structure and thermal stability of the samples were studied using X-ray diffraction, scanning and transmission electron microscopy, as well as differential scanning calorimetry methods. Although the cast alloys made with low-purity Zr showed somewhat decreased glass-forming ability, their mechanical strength was still high.
KW - B. Glasses, metallic
KW - B. Phase transformation
KW - C. Casting
KW - F. Electron microscopy, transmission
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U2 - 10.1016/j.intermet.2010.04.003
DO - 10.1016/j.intermet.2010.04.003
M3 - Article
AN - SCOPUS:77953651771
SN - 0966-9795
VL - 18
SP - 1531
EP - 1536
JO - Intermetallics
JF - Intermetallics
IS - 8
ER -