The effects of external compressive stress on the kinetics of low temperature bainitic transformation and microstructure in a superbainite steel
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Mingxing Zhou
, Guang Xu , Yulong Zhang and Zhengliang Xue
Abstract
The effects of external compressive stress below the yield strength of austenite on the kinetics of low temperature bainitic transformation and microstructure in a superbainite steel were studied through dilatometry, scanning electron microscopy and X-ray diffraction analysis simultaneously. The results show that even under a relatively low isothermal temperature of 300°C, compressive stress less than yield stress can clearly accelerate bainitic transformation because of the increase in total driving force for bainitic transformation and anisotropic transformation strain. Bainite ferrite becomes longer, the orientations of bainite sheaves become more uniform and the transformation strain becomes anisotropic under external compressive stress because of variants selection. The amount of bainite increases while the amount of martensite decreases with the application of external stress.
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Articles in the same Issue
- Contents
- Contents
- Original Contributions
- On the widths of the hysteresis of mechanically and thermally induced martensitic transformations in Ni–Ti-based shape memory alloys
- The effects of external compressive stress on the kinetics of low temperature bainitic transformation and microstructure in a superbainite steel
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- Simulation of dendritic growth of Al-4 wt.% Cu alloy from an undercooled melt
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- Electrochemical behaviour of stainless steel in acidic fluoride media
- Quick fabrication of appropriate morphology and composition CoFe films with desirable microwave properties
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- Nanocomposite based on polyaniline emeraldine-base and α-Al2O3: A structural characterization
- Effect of Cr3C2 content on the microstructure and properties of Mo2NiB2-based cermets
- Short Contributions
- Damage mechanisms in aluminum-matrix composites reinforced with nano-alumina particles
- Synthesis of ultrafine powder of vanadium carbide V8C7 by microwave heating
- People
- Prof. Dr. Werner Skrotzki on the occasion of his 65th birthday
- DGM News
- DGM News
Articles in the same Issue
- Contents
- Contents
- Original Contributions
- On the widths of the hysteresis of mechanically and thermally induced martensitic transformations in Ni–Ti-based shape memory alloys
- The effects of external compressive stress on the kinetics of low temperature bainitic transformation and microstructure in a superbainite steel
- The effect of compressing pressure on the microstructure and properties of W-10 wt.% Cu composite
- Simulation of dendritic growth of Al-4 wt.% Cu alloy from an undercooled melt
- Effects of contact pressure and sliding distance on the lubricated friction and wear properties of Zn-25Al-3Cu alloy: A comparative study with SAE 65 bronze
- Electrochemical behaviour of stainless steel in acidic fluoride media
- Quick fabrication of appropriate morphology and composition CoFe films with desirable microwave properties
- Piezo-absorbing effect of microwave absorbing composites with carbonyl iron particles as the filler
- Nanocomposite based on polyaniline emeraldine-base and α-Al2O3: A structural characterization
- Effect of Cr3C2 content on the microstructure and properties of Mo2NiB2-based cermets
- Short Contributions
- Damage mechanisms in aluminum-matrix composites reinforced with nano-alumina particles
- Synthesis of ultrafine powder of vanadium carbide V8C7 by microwave heating
- People
- Prof. Dr. Werner Skrotzki on the occasion of his 65th birthday
- DGM News
- DGM News