TY - JOUR
T1 - A study of the effects of particle 3-dimensional geometry and micro-texture on fatigue crack initiation behaviors in an Al-Cu alloy using focused ion beam and electron backscatter diffraction
AU - Wen, Wei
AU - Ngan, Alfonso H.W.
AU - Zhang, Yuanbin
AU - Xu, Bin
AU - Zhai, Tongguang
PY - 2013/3/1
Y1 - 2013/3/1
N2 - Multiple cracks were generated from surface particles in an Al-Cu alloy in four-point bend fatigue. These cracks mostly became non-propagating at or shortly beyond the particle/matrix interface on the surface. Cross-sectioning using focused ion beam revealed that the 3-dimensional geometry, especially the thickness, of fractured particles was the key factor controlling the driving force for micro-crack growth. The resistance to micro-crack growth was mainly associated with crack plane twist at the particle/matrix interface, as revealed by electron backscatter diffraction measurement.
AB - Multiple cracks were generated from surface particles in an Al-Cu alloy in four-point bend fatigue. These cracks mostly became non-propagating at or shortly beyond the particle/matrix interface on the surface. Cross-sectioning using focused ion beam revealed that the 3-dimensional geometry, especially the thickness, of fractured particles was the key factor controlling the driving force for micro-crack growth. The resistance to micro-crack growth was mainly associated with crack plane twist at the particle/matrix interface, as revealed by electron backscatter diffraction measurement.
KW - EBSD
KW - FIB
KW - Fatigue crack initiation
KW - Particle three-dimensions
KW - Texture
UR - http://www.scopus.com/inward/record.url?scp=84872774524&partnerID=8YFLogxK
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U2 - 10.1016/j.msea.2012.11.098
DO - 10.1016/j.msea.2012.11.098
M3 - Article
AN - SCOPUS:84872774524
SN - 0921-5093
VL - 564
SP - 97
EP - 101
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
ER -