The Effect of Nanoscale Mesoscopic Structural States Associated with Lattice Curvature on the Mechanical Behavior of Ti–6Al–4V Alloy; Physical Mesomechanics; Vol. 23, iss. 6
| Parent link: | Physical Mesomechanics Vol. 23, iss. 6.— 2020.— [P. 457–465] |
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| Institution som forfatter: | |
| Andre forfattere: | , , , , |
| Summary: | Title screen The paper studies the effect of the temperature of helical rolling, which creates nanoscale mesoscopic structural states in lattice curvature zones, on the low-temperature impact toughness of Ti-6Al-4V alloy. The polymorphic transformation temperature Tс = 950°C is shown to play the decisive role in this effect. The impact toughness is very high at helical rolling temperatures above Tс, while in the low-temperature range up to T = -70°C it decreases monotonically. This is a very important aspect of the technology. Starting from the helical rolling temperature T = 950°C, the toughness sharply decreases at T = -70°C. At T = 900°C, it decreases sharply already at T = -20°C. At T = 850°C, the level of the entire toughness curve of the alloy is low. The high level of impact toughness at T > Tс is found to be due to a two-stage transformation of the bcc β phase into a mixture of (α + β) phases. The first stage involves nonequilibrium microscopic decomposition into the α and β phases. At the second stage, the nonequilibrium β phase decomposes into (α + β) subbands in accordance with the interstitial structural states associated with lattice curvature. In helical rolling at T < Tс, the formation of martensite phases in the close-packed lattice of the α phase of titanium reduces its impact toughness. The fatigue life of Ti-6Al-4V alloy helically rolled at T = 1000°C remains unchanged. Режим доступа: по договору с организацией-держателем ресурса |
| Sprog: | engelsk |
| Udgivet: |
2020
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| Fag: | |
| Online adgang: | https://doi.org/10.1134/S1029959920060016 |
| Format: | Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=665040 |
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| 200 | 1 | |a The Effect of Nanoscale Mesoscopic Structural States Associated with Lattice Curvature on the Mechanical Behavior of Ti–6Al–4V Alloy |f V. E. Panin, I. A. Shulepov, A. V. Panin [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 12 tit.] | ||
| 330 | |a The paper studies the effect of the temperature of helical rolling, which creates nanoscale mesoscopic structural states in lattice curvature zones, on the low-temperature impact toughness of Ti-6Al-4V alloy. The polymorphic transformation temperature Tс = 950°C is shown to play the decisive role in this effect. The impact toughness is very high at helical rolling temperatures above Tс, while in the low-temperature range up to T = -70°C it decreases monotonically. This is a very important aspect of the technology. Starting from the helical rolling temperature T = 950°C, the toughness sharply decreases at T = -70°C. At T = 900°C, it decreases sharply already at T = -20°C. At T = 850°C, the level of the entire toughness curve of the alloy is low. The high level of impact toughness at T > Tс is found to be due to a two-stage transformation of the bcc β phase into a mixture of (α + β) phases. The first stage involves nonequilibrium microscopic decomposition into the α and β phases. At the second stage, the nonequilibrium β phase decomposes into (α + β) subbands in accordance with the interstitial structural states associated with lattice curvature. In helical rolling at T < Tс, the formation of martensite phases in the close-packed lattice of the α phase of titanium reduces its impact toughness. The fatigue life of Ti-6Al-4V alloy helically rolled at T = 1000°C remains unchanged. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Physical Mesomechanics | ||
| 463 | |t Vol. 23, iss. 6 |v [P. 457–465] |d 2020 | ||
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a Ti–6Al–4V alloy | |
| 610 | 1 | |a low-temperature impact toughness | |
| 610 | 1 | |a helical rolling | |
| 610 | 1 | |a nanoscale mesoscopic structural states | |
| 610 | 1 | |a martensite phases | |
| 610 | 1 | |a polymorphic transformation temperature | |
| 701 | 1 | |a Panin |b V. E. |c Director of Russian materials science center |c Research advisor of Institute of strength physics and materials science of Siberian branch of Russian Academy of Sciences |f 1930- |g Viktor Evgenyevich |3 (RuTPU)RU\TPU\pers\26443 |9 12146 | |
| 701 | 1 | |a Shulepov |b I. A. |c physicist |c Engineer-designer of Tomsk Polytechnic University, Candidate of physical and mathematical sciences |f 1954- |g Ivan Anisimovich |3 (RuTPU)RU\TPU\pers\33092 | |
| 701 | 1 | |a Panin |b A. V. |c physicist |c Professor of Tomsk Polytechnic University, doctor of physical and mathematical Sciences |f 1971- |g Alexey Viktorovich |3 (RuTPU)RU\TPU\pers\34630 |9 17992 | |
| 701 | 1 | |a Perevalova |b O. B. |g Olga Borisovna | |
| 701 | 1 | |a Vlasov |b I. V. |c specialist in the field of material science |c Engineer of Tomsk Polytechnic University |f 1988- |g Ilya Viktorovich |3 (RuTPU)RU\TPU\pers\33560 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа ядерных технологий |b Отделение экспериментальной физики |3 (RuTPU)RU\TPU\col\23549 |
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| 856 | 4 | |u https://doi.org/10.1134/S1029959920060016 | |
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