On Temperature Rise Within the Shear Bands in Bulk Metallic Glasses

被引：9

作者：

Bazlov, A. I. ^{[1
]}

Churyumov, A. Yu. ^{[1
]}

Buchet, M. ^{[2
]}

Louzguine-Luzgin, D. V. ^{[2
]}

机构：

[1] Natl Univ Sci & Technol MISiS, Leninsky Prospect 4, Moscow 119049, Russia

[2] Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, Katahira 2-1-1, Sendai, Miyagi 9808577, Japan

来源：

METALS AND MATERIALS INTERNATIONAL | 2018年 / 24卷 / 03期

关键词：

Metallic glasses; Deformation; Shear bands; Computer simulations; Temperature rise; SERRATED PLASTIC-FLOW; DEFORMATION-BEHAVIOR; FORMING ABILITY; ALLOYS; PROPAGATION; COMPRESSION; DYNAMICS; FRACTURE; FE;

D O I：

10.1007/s12540-018-0072-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Room temperature deformation process in a bulk metallic glassy sample was studied by using a hydraulic thermomechanical simulator. The temperature rise during each separate shear band propagation event was measured with a high data acquisition frequency by a thermocouple welded to the sample. Calculation showed that when propagation of the well developed shear bands takes place along the entire sample the temperature inside the shear band should be close to the glass-transition temperature. It was also possible to resolve the temporal stress distribution and a double-stage character of stress drops was also observed. The obtained results are compared with the literature data obtained by infrared camera measurements and the results of finite elements modeling.

引用

页码：481 / 488

页数：8

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