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Ahmad, Mushtaq; Xu, Yiwei; Ge, Yicheng; Hu, Zheng

doi:10.1023/a:1015373401342

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…The 1B-HT alloy was the most brittle among the studied alloys; a stair-like fracture surface is observed with pyramids and cleavages. The pyramids arose from the intersection of three planes in a secondary cleavage crack [27]. The fracture in this 1B-HT sample originated on flaws generated by ceramic inclusions from the casting mould at the subsurface of the part.…”

Section: Resultsmentioning

confidence: 99%

Influence of Boron Additions and Heat Treatments on the Fatigue Resistance of CoCrMo Alloys

et al. 2019

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Cobalt-based alloys are widely used in the manufacture of joint prostheses. In this study, the effect of boron additions and heat treatment on the ASTM F75 was evaluated by rotating bending fatigue. The boron ranged from 0.06–1 wt %. The alloys were tested in as-cast and heat-treated conditions. In the as-cast condition, the infinite life was observed at 380 MPa, improving to 433–615 MPa according to the amount of boron added. In the heat treatment condition, the fatigue resistance was improved only in the base alloy. The addition of 0.06 wt % boron and heat treatment led to the same resistance as in the as-cast condition. Adding large amounts of boron combined with heat treatment diminished the fatigue limit. The fracture analysis revealed primarily brittle behaviour with some ductile features even on the same sample; only the heat-treated alloy with 0.06 wt % boron was clearly ductile. This alloy also exhibited notably better toughness to crack propagation.

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Section: Resultsmentioning

confidence: 99%

Influence of Boron Additions and Heat Treatments on the Fatigue Resistance of CoCrMo Alloys

et al. 2019

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“…Co-base superalloys are used in gas turbines as a nozzle guide vane material due to their hot corrosion resistance in sulfurizing environment [1]. Nozzle guide vanes direct the hot gases on the rotating stage of the turbine at the most favorable angle of incidence.…”

Section: Introductionmentioning

confidence: 99%