Investigation of the mechanical behavior of MAX phases by acoustic emission technique

Karolina Kozak; Ariane Dosi; Miroslaw M. Bucko; Leszek Chlubny; Jerzy Lis; Guy Antou; Thierry Chotard

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Investigation of the mechanical behavior of MAX phases by acoustic emission technique

机译：用声发射技术研究MAX相的力学行为

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Mechanical properties of two ternary carbides at room temperature were investigated under cyclic bending test with simultaneous acoustic emission monitoring (AE). Results show significant differences between both of them in terms of observed microstructural changes associated to acoustic emission response. Thanks to this technique coupled with an accurate micrographic investigation by SEM, mechanisms such as debonding of layers in MAX phases grains or damage occurrence in secondary intermetallic phases (microcracking) were identified and their specific acoustic signatures separated populations of AE signals were distinguished. In addition, bending test were also conducted at specific temperatures (1073 K and 1473 K) in order to investigate the brittle-to-ductile transition of both materials.

机译：在同时进行声发射监测（AE）的循环弯曲试验下，研究了两种三元碳化物在室温下的力学性能。结果表明，在观察到的与声发射响应相关的微观结构变化方面，两者之间存在显着差异。多亏了这项技术，再加上通过SEM进行的精确显微照相，可以识别出诸如MAX相晶粒中的层剥离或二次金属间相中发生损伤（微裂纹）之类的机制，并区分了分离出的AE信号的特定声学特征。此外，还研究了在特定温度（1073 K和1473 K）下的弯曲试验，以研究两种材料的脆性-延性转变。

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《Materials Science and Engineering》 |2017年第7期|73-80|共8页
作者
Karolina Kozak; Ariane Dosi; Miroslaw M. Bucko; Leszek Chlubny; Jerzy Lis; Guy Antou; Thierry Chotard;
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作者单位

Umversite de Limoges, SPCTS, UMR 7315, 12 Atlanas Av., F-87000 Limoges, France,AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Av., 30-059 Krakow, Poland;

Umversite de Limoges, SPCTS, UMR 7315, 12 Atlanas Av., F-87000 Limoges, France;

AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Av., 30-059 Krakow, Poland;

AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Av., 30-059 Krakow, Poland;

AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Av., 30-059 Krakow, Poland;

Umversite de Limoges, SPCTS, UMR 7315, 12 Atlanas Av., F-87000 Limoges, France;

Umversite de Limoges, SPCTS, UMR 7315, 12 Atlanas Av., F-87000 Limoges, France;

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正文语种 eng
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关键词
MAX phases; Mechanical properties; Acoustic emission technique;

机译：MAX阶段;机械性能声发射技术;

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机译：用声发射分析研究点焊接头的力学行为

Investigation of the mechanical behavior of MAX phases by acoustic emission technique

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