TY - JOUR

T1 - Fatigue Crack Propagation Across the Multiple Length Scales of Technically Relevant Metallic Materials

AU - Hohenwarter, Anton

AU - Leitner, Thomas

AU - Pippan, Reinhard

N1 - Publisher Copyright: © 2024 by the author(s).

PY - 2024/8/5

Y1 - 2024/8/5

N2 - 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.

AB - 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.

KW - crack closure

KW - fatigue crack propagation

KW - fracture

KW - nanocrystalline

KW - severe plastic deformation

KW - ultrafine-grained

UR - http://www.scopus.com/inward/record.url?scp=85206470592&partnerID=8YFLogxK

U2 - 10.1146/annurev-matsci-080222-101859

DO - 10.1146/annurev-matsci-080222-101859

M3 - Review article

AN - SCOPUS:85206470592

VL - 54.2024

SP - 223

EP - 246

JO - Annual review of materials research

JF - Annual review of materials research

SN - 1531-7331

ER -