Topic
Fractography
About: Fractography is a research topic. Over the lifetime, 5043 publications have been published within this topic receiving 86068 citations.
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TL;DR: In this article, the microscale fracture mechanisms governing crack growth behavior under in-plane biaxial fatigue loading with single overloads, of different magnitudes and occurring at different fatigue crack lengths, are identified through detailed fractography.
36 citations
36 citations
TL;DR: In this article, the compression behavior of a Ca 65 Mg 15 Zn 20 bulk-metallic glass (BMG) was studied and the fracture strength was inversely proportional to the fracture time.
Abstract: The compression behavior of a Ca 65 Mg 15 Zn 20 bulk-metallic glass (BMG) was studied. The specimens showed no macroscopic plasticity. They fractured by exploding into many very small pieces. The Vickers hardness of the Ca 65 Mg 15 Zn 20 BMG was about 1.42 GPa. The fatigue limit for compression-compression fatigue was found to be about 140 MPa after 10 6 cycles. The fracture strength was inversely proportional to the fracture time. The proposed mechanism of the splitting and shear fracture modes clearly explained these properties.
35 citations
TL;DR: In this article, a metal-matrix composites reinforced with Al84Gd6Ni7Co3 glassy powders have been produced by accumulative roll bonding (ARB) for the first time.
35 citations
17 May 2017-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the effect of microstructure on the fatigue crack growth rate (FCGR) of laser solid formed (LSFed) 300M steel was investigated and the results showed that the as-deposited micro-structure of LSFed 300m steel consisted of martensite and coarse bainite and a small amount of retained austenite.
Abstract: In this research, the effect of microstructure on the fatigue crack growth rate (FCGR) of laser solid formed (LSFed) 300M steel was investigated. The results showed that the as-deposited microstructure of LSFed 300M steel consisted of martensite and coarse bainite. After heat treatment, the microstructure became homogeneous and was primarily composed of tempered martensite, bainite and a small amount of retained austenite. The FCGR of LSFed 300M steel gradually increases with increasing stress ratio (for a given stress intensity factor range and stress ratios between 0.1 and 0.5). The refined austenite grain of heat-treated LSFed 300M steel reduced the fatigue crack growth threshold (FCGT) and the FCGR. The fractography of as-deposited LSFed 300M steel was different from that of heat-treated LSFed 300M steel.
35 citations