Materials characterization of silicon carbide reinforced titanium (Ti/SCS-6) metal matrix composites: Part I. Tensile and fatigue behavior

Liaw, Peter K.; Diaz, E.S.; Chiang, K.T.; Loh, D. H.

doi:10.1007/bf02669451

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…According to Harindar, Nripjit, Sarabjeet, and Tayagi (2012), in tensile testing, the loading is tensile in nature, where the deformation is uniform and a rebounce effect due to work-hardening is negligible. And this effect is much more pronounced with decreasing the matrix strength as reported by Liaw, Diaz, Chiang, and Loh (1995). copper content composite showed increased hardness values.…”

Section: Compression Behaviormentioning

confidence: 59%

Mechanical properties of Aluminum-Copper(p) composite metallic materials

Madhusudan

Sarcar

Rao³

2016

Journal of Applied Research and Technology

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Composite metallic materials (CMMs) are prepared by dispersing copper particulates in aluminum matrix using stir-cast technique. Their behavior is compared with the alloy having similar composition. The effect of particulate composition is studied by varying the copper concentration between 5 and 15 wt%. Hardness increased with increasing particulate contents in both cast and homogenized conditions. Composites show a 13% drop in strength and 15% drop in strain compared to the alloy. With increasing reinforcement content, the strength increased and dropped. Agglomeration due to increased reinforcement contents may be the reason for the decrease in strength values. Microstructures corroborate the above results.

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Section: Compression Behaviormentioning

confidence: 59%

Mechanical properties of Aluminum-Copper(p) composite metallic materials

Madhusudan

Sarcar

Rao³

2016

Journal of Applied Research and Technology

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“…Furthermore, for structural materials, the fatigue strength is the most important factor for ensuring a long‐term reliability. For the propagation of fatigue cracks in unidirectional fibre‐reinforced metal matrix composites, the fibre bridging, interfacial debonding and fibre breakage are very important factors 1–4 . For the fibre bridging stress, many models have been proposed such as the shear lag model and so on 5–10 .…”

Section: Introductionmentioning

confidence: 99%

“…For the propagation of fatigue cracks in unidirectional fibre-reinforced metal matrix composites, the fibre bridging, interfacial debonding and fibre breakage are very important factors. [1][2][3][4] For the fibre bridging stress, many models have been proposed Correspondence: Yoshiaki Akiniwa. E-mail: akiniwa@mech.nagoya-u.ac.jp such as the shear lag model and so on.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of fibre bridging stress of short fatigue cracks in SCS‐6/Ti‐15‐3 composite

Akiniwa

Fujii

Kimura

et al. 2006

Fatigue Fract Eng Mat Struct

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A B S T R A C T Single-edge notched specimens of a unidirectional SiC long fibre reinforced titanium alloy, were fatigued under four point bending. The propagation behaviour of short fatigue cracks from a notch was observed on the basis of the effects of fibre bridging. The branched fatigue cracks were initiated from the notch root. The fatigue cracks propagated only in the matrix and without fibre breakage. The crack propagation rate decreased with crack extension due to the crack bridging by reinforced fibres. After fatigue testing the loading and residual stresses in the reinforced fibres were measured for the arrested cracks by the X-ray diffraction method. The longitudinal stresses in the reinforced fibres were measured using high spatial resolution synchrotron radiation. A stress map around the fatigue cracks was then successfully constructed. The longitudinal stress decreased linearly with increasing distance from a location adjacent to the wake of the matrix crack. This region of decreasing stress corresponded to the debonding area between the fibre and the matrix. The interfacial frictional stress between the matrix and the fibre could be determined from the fibre stresses. The bridging stress on the crack wake was also measured as a function of a distance from a notch root. The threshold stress intensity factor range, corrected on the basis of the shielding stress, was similar to the propagation behaviour of the monolithic matrix. Hence the main factor influencing the shielding effect in composites is fibre bridging.

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