Protocols for multi-step thermoplastic processing of metallic glasses

SCRIPTA MATERIALIA

卷:104

Article

Bordeenithikasem, Punnathat¹  Sohn, Sungwoo¹  Liu, Ze¹  Schroers, Jan¹ 

[1] Yale Univ, Dept Mech Engn & Mat Sci, New Haven, CT 06511 USA

关键词: Bulk metallic glass;    Differential scanning calorimetry;    Thermoplastic forming;    Crystallization;    Processing;   

DOI  :  10.1016/j.scriptamat.2015.03.024

来源: Elsevier

【 摘 要 】

Temperature profiles of multi-step thermoplastic forming of bulk metallic glasses were simulated by isothermal annealing at multiple temperatures and sequences. For a single annealing temperature, the time to crystallize is additive. When the sample is first annealed at a higher temperature and quenched to a lower temperature, time till crystallization is gained, and vice versa. These findings can be explained by the temperature dependence of nucleation and growth rates, which suggests the maximum nucleation temperature is below thermoplastic forming temperatures. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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