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Torsional Fatigue Cracking and Fracture Behaviors of Cold-Drawn Copper: Effects of Microstructure and Axial Stress
Li, Rong-Hua; Zhang, Peng; Zhang, Zhe-Feng
2019-12-01
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume32Issue:12Pages:1521-1529
AbstractThe fatigue cracking and fracture behavior of cold-drawn copper subjected to cyclic torsional loading were investigated in this study. It was found that with increasing stress amplitude, the fracture mode of cold-drawn copper gradually changes from a shear fracture on transverse maximum shear stress plane to a mixed shear mode on both transverse and longitudinal shear planes and finally turns to the shear fracture on multiple longitudinal shear planes. Combining the cracking morphology and the relationship between torsional fatigue cracking and the grain boundaries, the fracture mechanism of cold-drawn copper under cyclic torsional loading was analyzed and proposed by considering the effects of the microstructure and axial stress caused by torsion. Because of the promotion of the grain boundary distribution on longitudinal crack propagation and the inhibition of axial stress on transverse crack grown, the tendency of crack propagation along the longitudinal direction increases with increasing stress levels.
KeywordTorsion Fatigue behavior Crack propagation Fracture mechanisms Axial stress Copper
Indexed BySCI
Language英语
WOS IDWOS:000493679100003
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80644
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Li, Rong-Hua,Zhang, Peng,Zhang, Zhe-Feng. Torsional Fatigue Cracking and Fracture Behaviors of Cold-Drawn Copper: Effects of Microstructure and Axial Stress[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2019,32(12):1521-1529.
APA Li, Rong-Hua,Zhang, Peng,&Zhang, Zhe-Feng.(2019).Torsional Fatigue Cracking and Fracture Behaviors of Cold-Drawn Copper: Effects of Microstructure and Axial Stress.ACTA METALLURGICA SINICA-ENGLISH LETTERS,32(12),1521-1529.
MLA Li, Rong-Hua,et al."Torsional Fatigue Cracking and Fracture Behaviors of Cold-Drawn Copper: Effects of Microstructure and Axial Stress".ACTA METALLURGICA SINICA-ENGLISH LETTERS 32.12(2019):1521-1529.
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