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Fatigue and Fracture Behavior of a Cold-Drawn Commercially Pure Aluminum Wire

التفاصيل البيبلوغرافية
العنوان: Fatigue and Fracture Behavior of a Cold-Drawn Commercially Pure Aluminum Wire
المؤلفون: Jia-Peng Hou, Qiang Wang, Hua-Jie Yang, Xi-Mao Wu, Chun-He Li, Zhe-Feng Zhang, Xiao-Wu Li
المصدر: Materials, Vol 9, Iss 9, p 764 (2016)
بيانات النشر: MDPI AG, 2016.
سنة النشر: 2016
المجموعة: LCC:Technology
LCC:Electrical engineering. Electronics. Nuclear engineering
LCC:Engineering (General). Civil engineering (General)
LCC:Microscopy
LCC:Descriptive and experimental mechanics
مصطلحات موضوعية: commercially pure aluminum conductor, cold drawing, tension–tension fatigue, grain boundary migration, fracture, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85
الوصف: Fatigue properties and cracking behavior of cold-drawn commercially pure aluminum wires (CPAWs) widely used as the overhead transmission conductors were investigated. It was found that the fracture surface of the CPAWs shows an obvious four-stage fracture characteristic, i.e., crack initiation, planar crack propagation, 45°-inclined crack propagation and final rapid fracture. The crack growth mechanisms for the CPAWs were found quite different from those for the conventional coarse-grained materials. The cracks in the CPAWs firstly grow along the grain boundaries (Stage I crack growth), and then grow along the plane of maximum shear stress during the last stage of cycling (Stage II crack growth), leading to the distinctive fracture surfaces, i.e., the granular surface in the planar crack propagation region and the coarse fatigue striations in the 45°-inclined crack propagation region. The grain boundary migration was observed in the fatigued CPAWs. The increase in fatigue load enhances the dislocation recovery, increases the grain boundary migration rate, and thus promotes the occurrence of softening and damage localization up to the final failure.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1996-1944
Relation: http://www.mdpi.com/1996-1944/9/9/764; https://doaj.org/toc/1996-1944
DOI: 10.3390/ma9090764
URL الوصول: https://doaj.org/article/2dbc8f5954f24a03b1e79216b0cd9b38
رقم الأكسشن: edsdoj.2dbc8f5954f24a03b1e79216b0cd9b38
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:19961944
DOI:10.3390/ma9090764