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| 035 | _a(RuTPU)RU\TPU\network\27654 | ||
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| 100 | _a20190124a2018 k y0engy50 ba | ||
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| 200 | 1 |
_aEffect of Age Hardening on Phase Composition and Microhardness of V-Free and V-Alloyed High-Nitrogen Austenitic Steels _fG. Maier [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References: 11 tit.] | ||
| 330 | _aEffect of age hardening regime (at the temperatures of 700 and 800°C for 10 min to 10 h) on phase composition and microhardness of high-nitrogen steels was investigated. Before age hardening treatments, specimens of V-free and V-alloyed steels, Fe-23Cr-17Mn-0.1C-0.6N (0V-HNS) and Fe-19Cr-22Mn-1.5V-0.3C-0.9N (1.5V-HNS), were water-quenched after 1200°C (for 0.5 h) to produce supersaturated solid solution of interstitial atoms (nitrogen and carbon) in austenite (7% ferrite in 0V-HNS, no ferrite and <5% VN precipitates in 1.5V-HNS were formed). V-alloying changes a kinetics of age-hardening in high-nitrogen steels. According to XRD data, aging at 700 and 800°C results in decomposition of austenite and ferrite in 0V-HNS and formation of duplex microstructure, which consist of high-nitrogen austenite, ferrite, Cr2(N, C) precipitates and intermetallic σ-phase. Such duplex microstructure consists of two types of grains: (1) austenitic grains with precipitates mainly along grain boundaries possess lower microhardness characteristics (about 3.5 GPa); and (2) decomposed multiphase grains have high microhardness (4.5-5.5 GPa depending on aging duration). After aging of vanadium-containing steel at 700 and 800°C, rather homogeneous composite structure forms, which consists of high-nitrogen austenite, ferrite and (V, Cr) (N, C) particles randomly distributed both on grain boundaries and in grain bodies. This stricture possesses high microhardness values about 4.0-4.5 GPa. Independently on age hardening regime and steel composition, the most pronounced effects of hardening occur during short-time age hardening regimes (0.5-1 h). | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | 0 |
_0(RuTPU)RU\TPU\network\4816 _tAIP Conference Proceedings |
|
| 463 | 0 |
_0(RuTPU)RU\TPU\network\27575 _tVol. 2051 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2018 (AMHS’18) _oProceedings of the International conference, 1–5 October 2018, Tomsk, Russia _fNational Research Tomsk Polytechnic University (TPU); eds. V. E. Panin, S. G. Psakhie, V. M. Fomin _v[020183, 5 p.] _d2018 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _aупрочнение | |
| 610 | 1 | _aфазовый состав | |
| 610 | 1 | _aмикротвердость | |
| 610 | 1 | _aлегированные стали | |
| 610 | 1 | _aаустенитные стали | |
| 701 | 1 |
_aMaier _bG. _gGalina |
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| 701 | 1 |
_aAstafurova _bE. _gElena |
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| 701 | 1 |
_aMoskvina _bV. _gValentina |
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| 701 | 1 |
_aMelnikov _bE. _gEugene |
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| 701 | 1 |
_aAstafurov _bS. _gSergey |
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| 701 | 1 |
_aTumbusova _bI. _gIrina |
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| 701 | 1 |
_aFortuna _bA. _gAnastasia |
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| 701 | 1 |
_aPanchenko _bM. _gMarina |
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| 701 | 1 |
_aMironov _bYu. _gYuri |
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| 701 | 1 |
_aMirovoy _bYu. _gYuri |
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| 701 | 1 |
_aGalchenko _bN. _gNina |
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| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет (ТПУ) _c(2009- ) _2stltpush _3(RuTPU)RU\TPU\col\15902 |
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_aRU _b63413507 _c20190124 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.1063/1.5083426 | |
| 942 | _cCF | ||