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Showing 1 to 5 of 5 for “"Austempering"”.
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Development Of High Strength High Toughness Third Generation Advanced High Strength Steels.
… were subjected to single step and two step austempering in the temperature range of 260-399oC to obtain desired microstructures and mechanical properties. Austempering heat treatment was carried out for 2 hours in a molten salt bath. The microstructures were characterized by X-ray …
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The abrasive wear resistance of austempered spheroidal graphite irons
… temperatures between 850°C and 950°C and austempering temperatures between 250°C and 450°C. The morphology and constitution of the resulting dual phase ferrite/austenite structure has been examined using optical and scanning electron microscopy and x-ray analysis. The maximum quantity of …
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Carbide-free bainitic steels for wear and rolling contact fatigue resistant applications
… conditions in real-life applications. Two-step austempering and sub-zero cooling post-treatment were utilized as ways of reducing excess of blocky retained austenite. Microstructural alterations were observed with use of optical and electron microscopy methods, as well as quantified by X-ray …
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The unlubricated sliding wear behaviour of austempered ductile irons
… wear regime, for a specific sliding velocity. On austempering these spheroidal graphite irons the mechanical properties as well as the sliding wear resistance increased dramatically. Furthermore, the austempered irons' outperformed a series of steels of much higher hardness by factors between 2 …
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Influence Of Dissolved Hydrogen On The Fatigue Crack Growth Behaviour Of Aisi 4140 Steel
… It is also observed that increasing the austempering temperature decreases the resistance to hydrogen embrittlement. An interesting phenomenon was also observed in annealed specimen charged with hydrogen for 250 h which had an unusually high fatigue threshold (ΔKth).</p>