Correlation between pre-peak in structure factor and physical properties in Al-based amorphous alloys

To study the influence of Fe addition on the Al-based amorphous alloys, the structure and properties of Al 84Ni 10La 6 and Al 84Ni 9Fe 1La 6 alloys were investigated through various techniques. The results show that 1% Fe (molar fraction) addition increases the area of the pre-peak in the structure...

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Published inTransactions of Nonferrous Metals Society of China Vol. 21; no. 1; pp. 80 - 87
Main Authors LI, Rui, WANG, Wei-min, MA, Hai-jian, LI, Gui-hua, QIN, Jing-yu, ZHANG, Zhong-hua, TANG, Xing-wei
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2011
Subjects
Al-based amorphous
Alloys
Aluminum base alloys
Amorphous alloys
corrosion resistance
free volume
Glass
Iron
magnetism
medium-range order
Metallic glasses
Structure factor
Thermal expansion
magnetism
medium-range order
free volume
Al-based amorphous
corrosion resistance
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Summary:To study the influence of Fe addition on the Al-based amorphous alloys, the structure and properties of Al 84Ni 10La 6 and Al 84Ni 9Fe 1La 6 alloys were investigated through various techniques. The results show that 1% Fe (molar fraction) addition increases the area of the pre-peak in the structure factor and decreases the thermal expansion coefficient difference between the crystalline and amorphous states. 1% Fe addition also improves the glass forming ability (GFA), micro-hardness, fracture toughness, electric resistivity, absolute diamagnetism and corrosion resistance of Al-Ni-La alloys, which is related to the changes of medium-range order and quench-in free volume caused by 1% Fe addition.
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ISSN:1003-6326
DOI:10.1016/S1003-6326(11)60681-X