Effect of Process Parameters on Microstructures and Mechanical Properties of a Nano/ultrafine Grained Low Carbon Steel Produced by Martensite Treatment Using Plane Strain Compression
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概要
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In this work, the martensite treatment consisting of cold deformation by plane strain compression and subsequent annealing was used for producing the nano/ultrafine grained structure in a low carbon steel. The equivalent strain was varied from 0.1 to 2, while the annealing process was carried out in the temperature range of 400–600°C for 0–180 min. The microstructural evolution and mechanical properties of the as-deformed and annealed specimens were investigated. The results showed that in the as-deformed specimens, increase in strain intensified the volume fraction of the martensite cell blocks and consequently the strength. Fully equiaxed nano/ultrafine grained ferrite was developed from the martensite cell blocks during the annealing at warm temperature around 500°C for sufficient time lengths. It was concluded that the final multi-phased microstructure composed of ultrafine ferrite grains, block-tempered martensite, and fine cementite precipitates was responsible for the obtained superior mechanical properties.
著者
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Najafizadeh Abbas
Department Of Material Science And Engineering Isfahan University Of Technology
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Kermanpur Ahmad
Department Of Materials Engineering Isfahan University Of Technology
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Hosseini Seyed
Department Of Agronomy Faculty Of Agriculture Ferdowsi University Of Mashhad
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ALISHAHI Mostafa
Department of Materials Engineering, Isfahan University of Technology
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Alishahi Mostafa
Department Of Materials Engineering Isfahan University Of Technology
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HOSSEINI Seyed
Department of Materials Engineering, Isfahan University of Technology
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- Effect of Process Parameters on Microstructures and Mechanical Properties of a Nano/ultrafine Grained Low Carbon Steel Produced by Martensite Treatment Using Plane Strain Compression
- Effect of Process Parameters on Microstructures and Mechanical Properties of a Nano/ultrafine Grained Low Carbon Steel Produced by Martensite Treatment Using Plane Strain Compression