Fatigue Crack Propagation Across the Multiple Length Scales of Technically Relevant Metallic Materials

IF 10.6 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Anton Hohenwarter, Thomas Leitner, Reinhard Pippan
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引用次数: 0

Abstract

The fundamentals of our understanding of fatigue crack propagation were formed more than 60 years ago by Paul C. Paris. Since then, the run toward new metallic materials and alloys with ever finer-grained microstructures has had a large impact on research. Along with enormous variation of the microstructural length scales (i.e., grain size), the essential parameters for the description of fatigue crack growth, such as the crack propagation rate and plastic zone size, also exhibit an immense change from the subnanometer to the micrometer regime. These enormous variations in the fatigue crack growth behavior's controlling parameters motivate this contribution. This article presents an overview of the effect of grain size, from the millimeter to the nanometer grain-size regime, on fatigue crack propagation of mainly ductile metals and alloys with an attempt to summarize the most important findings and underlying physical phenomena, including with respect to selected materials such as pure iron, nickel, and austenitic and pearlitic steel.
技术相关金属材料多长度尺度上的疲劳裂纹扩展
我们对疲劳裂纹扩展的基本认识是在 60 多年前由保罗-C-帕里斯(Paul C. Paris)形成的。从那时起,微观结构越来越细的新型金属材料和合金对研究产生了巨大影响。随着微结构长度尺度(即晶粒尺寸)的巨大变化,描述疲劳裂纹生长的基本参数,如裂纹扩展速率和塑性区尺寸,也从亚纳米级到微米级发生了巨大变化。疲劳裂纹生长行为控制参数的这些巨大变化促成了本文的发表。本文概述了从毫米到纳米晶粒尺寸体系的晶粒尺寸对主要是韧性金属和合金的疲劳裂纹扩展的影响,并试图总结最重要的发现和基本物理现象,包括选定材料,如纯铁、镍、奥氏体钢和珠光体钢。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Annual Review of Materials Research
Annual Review of Materials Research 工程技术-材料科学:综合
CiteScore
17.70
自引率
1.00%
发文量
21
期刊介绍: The Annual Review of Materials Research, published since 1971, is a journal that covers significant developments in the field of materials research. It includes original methodologies, materials phenomena, material systems, and special keynote topics. The current volume of the journal has been converted from gated to open access through Annual Reviews' Subscribe to Open program, with all articles published under a CC BY license. The journal defines its scope as encompassing significant developments in materials science, including methodologies for studying materials and materials phenomena. It is indexed and abstracted in various databases, such as Scopus, Science Citation Index Expanded, Civil Engineering Abstracts, INSPEC, and Academic Search, among others.
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