Temporal sequence of deformation twinning in CoCrNi under tribological load

被引：6

作者：

Dollmann, Antje ^{[1
,2
]}

Rau, Julia S. ^{[1
,2
]}

Bieber, Beatrix ^{[1
]}

Mantha, Lakshmi ^{[3
,5
]}

Kuebel, Christian ^{[3
,4
,5
]}

Kauffmann, Alexander ^{[1
]}

Tirunilai, Aditya Srinivasan ^{[1
]}

Heilmaier, Martin ^{[1
]}

Greiner, Christian ^{[1
,2
]}

机构：

[1] Karlsruhe Inst Technol KIT, Inst Appl Mat IAM, Kaiserstr 12, D-76131 Karlsruhe, Germany

[2] IAM ZM MicroTribol Ctr TC, Str Forum 5, D-76131 Karlsruhe, Germany

[3] Karlsruhe Inst Technol KIT, Inst Nanotechnol INT, D-76344 Eggenstein Leopldshafen, Germany

[4] Tech Univ Darmstadt TUD, KIT TUD Joint Res Lab Nanomat, D-64287 Darmstadt, Germany

[5] Karlsruhe Inst Technol KIT, Karlsruhe Nano Micro Facil KNMFi, D-76344 Eggenstein Leopoldshafen, Germany

来源：

SCRIPTA MATERIALIA | 2023年 / 229卷

基金：

欧洲研究理事会;

关键词：

Twinning; Twin intersection; Tribology; CoCrNi; CrCoNi; NiCoCr; TEM; MICROSTRUCTURE EVOLUTION; BEHAVIOR; INTERSECTIONS; ALLOYS; SUBSTRUCTURE; FRICTION; TWINS; MILD; WEAR;

D O I：

10.1016/j.scriptamat.2023.115378

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Microstructural evolution under tribological load is known to change the friction and wear response of the entire tribological system. It is however not yet fully understood, how these changes take place on an elementary, mechanistic level. Revealing the temporal sequence of deformation mechanisms under a tribological load by experiments is scarce. The discrete strain release in the case of deformation twinning allows the identification of their temporal sequence. Therefore, a medium stacking fault energy material, namely CoCrNi, was investigated due to the significant contribution of deformation twinning to the overall deformation at room temperature. The investigated grain showed three activated twin systems. The evolution sequence of these is discussed critically based on several twin intersection mechanisms. The experimental analysis decodes the temporal sequence of the active twinning systems of highest resolved shear stresses for the first time. This approach gives experimental indications for the stress field under tribological load.

引用

页数：5

共 36 条

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