Effect of preannealing on glass transition and crystallization of gas atomized Cu47Ti33Zr11Ni8Si1 metallic glass powders

Venkataraman, S.; Eckert, J.; Schultz, L.; Sordelet, D.J.

doi:10.1016/j.intermet.2006.01.028

Cited by 8 publications

(3 citation statements)

References 41 publications

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“…S. Venkatarman suggested that the thermal treatment would enhance a short-range order. 21) In the present work, the sintering process conducted near the T g can result in structure relaxation in addition to possible phase separation. The heterogeneous structure as well as composition changes induced by sintering process is likely to form the nuclei for crystallization.…”

Section: Methodsmentioning

confidence: 83%

Synthesis of Ti-Based Glassy Alloy/Hydroxyapatite Composite by Spark Plasma Sintering

et al. 2008

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The spark plasma sintering process has been used to fabricate Ti 40 Zr 10 Cu 36 Pd 14 glassy alloy/hydroxyapatite composites. XRD, DSC, SEM and compression testes were used to examine the microstructure and properties of the composites. No crystallization was observed in the glassy alloy matrix. The glass transition temperature (T g ) is independent of the HA addition and the onset temperature of crystallization (T x ) slightly decreases with increasing HA content. The sintered composite exhibited reduced value of Young's moduli as compared with the as-cast Ti 40 Zr 10 Cu 36 Pd 14 bulk glassy alloy.

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Section: Methodsmentioning

confidence: 83%

Synthesis of Ti-Based Glassy Alloy/Hydroxyapatite Composite by Spark Plasma Sintering

et al. 2008

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“…This manifests that the crystallization behavior is in a marked kinetic nature. [25][26][27] The values of the onset of crystallization temperature T x and the crystallization peak temperature T p for the different heating rates of samples are given in Table 2. It is found that the T p are signicantly shied to higher temperatures with increasing Co content from Table 1.…”

Section: Methodsmentioning

confidence: 99%

The crystallization kinetics of Co doping on Ni–Mn–Sn magnetic shape memory alloy thin films

et al. 2018

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Co doping is an effective means to improve the performance of Ni-Mn-Sn alloy bulks and thin films.However, the Co doping effect on the crystallization process of the Ni-Mn-Sn alloy thin films is important but not clear. Therefore, we investigate the influence of Co doping on the crystallization kinetics for Ni 50 Mn 37Àx Sn 13 Co x (x ¼ 0, 0.5, 1.5, 4) magnetic shape memory alloy thin films by DSC analysis. For the non-isothermal process, each DSC curve has a single exothermic peak, which is asymmetrical. The crystallization peak temperatures and the activation energy of thin films both rise gradually with increasing Co content. Then, the activation energy of Ni 50 Mn 37Àx Sn 13 Co x (x ¼ 0, 0.5, 1.5, 4) thin films obtained by the Kissinger equation method is determined as 157.9 kJ mol À1 , 198.8 kJ mol À1 , 213 kJ mol À1 and 253.6 kJ mol À1 , respectively. The local activation energy of thin films with different Co content show the different variation tendency. In the isothermal crystallization, the average of the Avrami exponent n for thin films of each Co content is approximately 1.5, suggesting that the mechanism of crystallization is two-dimensional diffusion-controlled growth for Ni 50 Mn 37Àx Sn 13 Co x (x ¼ 0, 0.5, 1.5, 4) thin films.

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“…Fig. 3 shows after annealing at 680 K for 1.5 h and 3 h, T x and T x decrease, which show a reduced thermal stability [37]. Moreover, V f increases indicating the specimen has undergone the partial crystallization.…”

Section: Hardnessmentioning

confidence: 97%

Effect of rolling on the microstructure and mechanical property of Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glass

Zhang

et al. 2008

Journal of Alloys and Compounds

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Effect of preannealing on glass transition and crystallization of gas atomized Cu47Ti33Zr11Ni8Si1 metallic glass powders

Cited by 8 publications

References 41 publications

Synthesis of Ti-Based Glassy Alloy/Hydroxyapatite Composite by Spark Plasma Sintering

Synthesis of Ti-Based Glassy Alloy/Hydroxyapatite Composite by Spark Plasma Sintering

The crystallization kinetics of Co doping on Ni–Mn–Sn magnetic shape memory alloy thin films

Effect of rolling on the microstructure and mechanical property of Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glass

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