Study of Heat Treatment Regimes During Production of a New Generation of Invar Alloys

Over the last two decades it was well documented that the formation of ultrafine-grained (UFG) structures with the grain sizes in submicron (< 1 µm) or nanometer (< 100 nm) range in metallic materials increases strength but typically also leads to decrease in ductility. However, recent studies demonstrated that extraordinarily high strength and enhanced ductility can be obtained in the UFG metals and alloys when it is possible to control not only grain sizes but also the formation of various nanostructured elements, such as nanoparticles, nanotwins and grain boundary structures (states) by means of severe plastic deformation (SPD) techniques. These new trends applied to different metallic materials with superior strength and high ductility are considered and discussed in the present paper.

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“…The Hall-Petch plots for UFG commercially pure (CP) Ti (A-70, similar to Grade 4) and Armco-Fe have shown similar tendencies [37][38][39].…”

Section: Superstrength and Hardening Mechanismsmentioning

confidence: 97%

Recent Findings in Superior Strength and Ductility of Ultrafine-Grained Materials

Valiev

Zhu

2015

Trans. Mat. Res. Soc. Japan

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“…These methods are technologically convenient and are com patible with existing wire production technology. Fundamentally new continuous deformation methods have been developed: equal channel angular free extension [8]; and a method combining tensile, flex ural, and torsional deformation [9].…”

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confidence: 99%

Creating ultrafine-grain structure in high-strength bimetallic steel-copper products

et al. 2014

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“…1. This method, which is covered by a Russian patent [12,13], is compatible with industrial drawing speeds; the equipment may easily be introduced in existing wire production lines; and a standard tool used in wire and cable production is employed. Comprehensive tests show that ultrafine grain structure may be produced in low carbon steel wire.…”

mentioning

confidence: 99%

Ultrafine-grain structure and properties of carbon-steel wire after complex deformation

et al. 2014

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Study of Heat Treatment Regimes During Production of a New Generation of Invar Alloys

Cited by 5 publications

References 1 publication

Recent Findings in Superior Strength and Ductility of Ultrafine-Grained Materials

Recent Findings in Superior Strength and Ductility of Ultrafine-Grained Materials

Creating ultrafine-grain structure in high-strength bimetallic steel-copper products

Ultrafine-grain structure and properties of carbon-steel wire after complex deformation

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