Air oxidation of a Zr55Cu30Al10Ni5 bulk metallic glass at its super cooled liquid state

Zhang, Mao; Yao, Di; Wang, Xinyun; Deng, Lei

doi:10.1016/j.corsci.2014.02.007

Cited by 43 publications

(18 citation statements)

References 30 publications

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“…The blanks were thensliced into specimens withdimensions of 3.0×3.0×1.0mm 3 through wire electric machining. The glass transition temperature T g and the onset temperature of crystallization T x of the specimens were determined as 684 and 750 K by using a differential scanning calorimeter (DSC, Diamond DSC, PerkinElmer Instruments) [33].The specimens were confirmed to be fully amorphous by using an X-ray diffractometer (XRD, XRD-7000S, SHIMADZU) [33]. Surface treatment was conducted on the upper surfaces of specimens while the lower surfaces and sides surfaces were untreated.…”

Section: Methodsmentioning

confidence: 99%

Effect of surface morphology on the oxidation behavior of bulk metallic glass

et al. 2015

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Section: Methodsmentioning

confidence: 99%

Effect of surface morphology on the oxidation behavior of bulk metallic glass

et al. 2015

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“…It is found that Ti-based BMGs possess relatively small S values compared with other BMGs, implying a relatively low thermoplastic formability. Moreover, as titanium is a very active element, during the heating process in air, the oxidation is more serious compared with Pd-, Au-, and Pt-based BMGs, which is harmful to the thermoplastic forming [213][214][215]. In order to perform the thermoplastic forming of Ti-based BMGs, especially in air, it is necessary to first attempt composition optimization in order to develop novel Ti-based BMGs with better thermoplastic formability and oxidation resistance.…”

Section: Thermoplastic Formabilitymentioning

confidence: 99%

Review on the Research and Development of Ti-Based Bulk Metallic Glasses

Gong

Deng

Jin

et al. 2016

Metals

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Abstract:Ti-based bulk metallic glasses (BMGs) are very attractive for applications because of their excellent properties such as high specific strength and high corrosion resistance. In this paper, we briefly review the current status of the research and development of Ti-based bulk metallic glasses. Emphasis is laid on glass-forming ability, mechanical properties, corrosion resistance, and biocompatibility.

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“…Previous studies suggest that during dry sliding, surface oxidation can occur when the contact temperature is near the glass transition temperature (T g ) [7] and above T g [9] due to the high oxygen permeability of the oxide film formed in the supercooled liquid region where the viscosity drops. Additionally, the lack of long-range order inherent to amorphous materials can lead to microstructural changes during contact sliding, changing the wear performance of the material [10,11].…”

Section: Introductionmentioning

confidence: 99%

Strategy for preventing excessive wear rate at high loads in bulk metallic glass composites

et al. 2017

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The effect of nickel additions to tune the wear performance of Cu 45.5 Zr 51 Al 3.5 at. % alloy has been studied to present a new strategy for preventing excessive wear rate at high loads in metallic glass composites. This strategy consists on proper selection of a doping element in controlled concentrations with the ability to decrease the glass transition temperature (T g ) of the alloy so that the friction temperature during sliding is close to the T g . This enables the formation of crystalline phases and their subsequent oxidation (lubricating layer) on the contact surface during sliding thus enhancing the wear resistance. Proper doping can also contribute towards the wear resistance when the content of the doping element promotes the martensitic transformation. The results show that the main wear mechanism for the three studied alloys (Cu 45.5 Zr 51 Al 3.5 , Cu 44.5 Zr 51 Al 3.5 Ni 1 and Cu 43.5 Zr 51 Al 3.5 Ni 2 at. %) is governed by delamination and the mass loss increases with increasing load from 1 to 10 N. However, for the maximum load of 15 N, the calculated friction temperature is close to T g for the Ni-containing alloys and partial crystallization and oxidation take place resulting in a mass loss decrease from about 2.6 mg (at 10 N) to about 2.1 mg (at 15 N).

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Air oxidation of a Zr55Cu30Al10Ni5 bulk metallic glass at its super cooled liquid state

Cited by 43 publications

References 30 publications

Effect of surface morphology on the oxidation behavior of bulk metallic glass

Effect of surface morphology on the oxidation behavior of bulk metallic glass

Review on the Research and Development of Ti-Based Bulk Metallic Glasses

Strategy for preventing excessive wear rate at high loads in bulk metallic glass composites

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