High-cycle fatigue behavior of Zn-22% Al alloy processed by high-pressure torsion

Choi, In-Chul; Yoo, Byung-Gil; Kraft, Oliver; Schwaiger, Ruth; Seok, Moo-Young; Kawasaki, Megumi; Langdon, Terence G.; Jang, Jae-Il

doi:10.1016/j.msea.2014.08.084

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High-cycle fatigue behavior of Zn-22% Al alloy processed by high-pressure torsion

Choi, In-Chul;
Yoo, Byung-Gil;
Kraft, Oliver;
Schwaiger, Ruth;
Seok, Moo-Young;
... Jang, Jae-Il;
외 2명

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초록

A Zn-22% Al eutectoid alloy was processed by high-pressure torsion (HPT) and its high-cycle fatigue behavior was explored using novel small-scale bending fatigue experiments. Testing of the finest grain region in each HPT disk showed that the fatigue life decreases continuously with increasing numbers of torsional revolutions. The results are discussed in terms of the HPT-induced hardness change and the underlying fatigue failure mechanism.

키워드

Hardness; High-pressure torsion; High-cycle fatigue; Ultrafine-grained material; Zn-Al alloy; SEVERE PLASTIC-DEFORMATION; STRAIN-RATE SENSITIVITY; NANOCRYSTALLINE METALS; ROOM-TEMPERATURE; GRAIN-REFINEMENT; ALUMINUM-ALLOY; EVOLUTION; SUPERPLASTICITY; MECHANISM; DUCTILITY

제목: High-cycle fatigue behavior of Zn-22% Al alloy processed by high-pressure torsion

저자: Choi, In-Chul; Yoo, Byung-Gil; Kraft, Oliver; Schwaiger, Ruth; Seok, Moo-Young; Kawasaki, Megumi; Langdon, Terence G.; Jang, Jae-Il

DOI: 10.1016/j.msea.2014.08.084

발행일: 2014-11

유형: Article

저널명: Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

권: 618

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