Effects of Water Cooling on the Microstructure of Electron Beam Additive-Manufactured Ti-6Al-4V; Metals; Vol. 11, iss. 11
| Parent link: | Metals Vol. 11, iss. 11.— 2021.— [1742, 15 p.] |
|---|---|
| مؤلف مشترك: | |
| مؤلفون آخرون: | , , , , , , , |
| الملخص: | Title screen The inferior mechanical properties of EBAM Ti-6Al-4V samples are due to the coarse columnar grains containing coarse lamellar structures. One can expect that water cooling of the build platform will increase the cooling rate of the molten pool during the build-up process, causing microstructure refinement. In the present work, the substrate cooling effects on the microstructure and phase composition of EBAM Ti-6Al-4V samples are studied using optical, scanning electron, and scanning transmission microscopy, as well as X-ray diffraction analysis. It is shown that the microstructure of the EBAM Ti-6Al-4V samples built on the substrate without water cooling consists predominantly of columnar prior beta grains with lateral sizes ranging up to 2000 [mu]m, while cooling of the build platform causes the appearance of equiaxed prior beta grains measuring 1000 [mu]m. Moreover, the refinement of the martensite structure and the precipitation of alpha′′ martensite platelets within alpha laths occur in the EBAM Ti-6Al-4V samples built on the water-cooled build platform. An explanation of the mechanisms underlying the alpha′→alpha+beta and alpha′→alpha+alpha′′+beta transformations during the building process is provided based upon ab initio calculations. The fragmentation of the α laths under the residual compressive stresses is discussed. |
| اللغة: | الإنجليزية |
| منشور في: |
2021
|
| الموضوعات: | |
| الوصول للمادة أونلاين: | http://earchive.tpu.ru/handle/11683/71107 https://doi.org/10.3390/met11111742 |
| التنسيق: | الكتروني فصل الكتاب |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666344 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 666344 | ||
| 005 | 20250214164337.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\37548 | ||
| 035 | |a RU\TPU\network\37205 | ||
| 090 | |a 666344 | ||
| 100 | |a 20211217d2021 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a CH | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Effects of Water Cooling on the Microstructure of Electron Beam Additive-Manufactured Ti-6Al-4V |f A. V. Panin, S. A. Martynov, M. S. Kazachenok [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 48 tit.] | ||
| 330 | |a The inferior mechanical properties of EBAM Ti-6Al-4V samples are due to the coarse columnar grains containing coarse lamellar structures. One can expect that water cooling of the build platform will increase the cooling rate of the molten pool during the build-up process, causing microstructure refinement. In the present work, the substrate cooling effects on the microstructure and phase composition of EBAM Ti-6Al-4V samples are studied using optical, scanning electron, and scanning transmission microscopy, as well as X-ray diffraction analysis. It is shown that the microstructure of the EBAM Ti-6Al-4V samples built on the substrate without water cooling consists predominantly of columnar prior beta grains with lateral sizes ranging up to 2000 [mu]m, while cooling of the build platform causes the appearance of equiaxed prior beta grains measuring 1000 [mu]m. Moreover, the refinement of the martensite structure and the precipitation of alpha′′ martensite platelets within alpha laths occur in the EBAM Ti-6Al-4V samples built on the water-cooled build platform. An explanation of the mechanisms underlying the alpha′→alpha+beta and alpha′→alpha+alpha′′+beta transformations during the building process is provided based upon ab initio calculations. The fragmentation of the α laths under the residual compressive stresses is discussed. | ||
| 461 | |t Metals | ||
| 463 | |t Vol. 11, iss. 11 |v [1742, 15 p.] |d 2021 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a wire-fed electron beam additive manufacturing | |
| 610 | 1 | |a Ti-6Al-4V | |
| 610 | 1 | |a water-cooled substrate | |
| 610 | 1 | |a microstructure | |
| 610 | 1 | |a martensite decomposition | |
| 610 | 1 | |a residual stress | |
| 610 | 1 | |a аддитивное производство | |
| 610 | 1 | |a Ti-6Al-4V | |
| 610 | 1 | |a субстраты | |
| 610 | 1 | |a микроструктуры | |
| 610 | 1 | |a разложение | |
| 610 | 1 | |a мартенсит | |
| 610 | 1 | |a водяное охлаждение | |
| 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 Martynov |b S. A. |g Sergey Aleksandrovich | |
| 701 | 1 | |a Kazachenok |b M. S. |g Marina Sergeevna | |
| 701 | 1 | |a Kazantseva |b L. M. |g Lyudmila Mikhaylovna | |
| 701 | 1 | |a Bakulin |b A. V. |g Aleksandr Viktorovich | |
| 701 | 1 | |a Kulkova |b S. |g Svetlana | |
| 701 | 1 | |a Perevalova |b O. B. |g Olga Borisovna | |
| 701 | 1 | |a Sklyarova |b E. A. |c physicist |c associate Professor of Tomsk Polytechnic University, candidate of pedagogical Sciences |f 1972- |g Elena Aleksandrovna |3 (RuTPU)RU\TPU\pers\34705 |9 18055 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа ядерных технологий |b Отделение экспериментальной физики |3 (RuTPU)RU\TPU\col\23549 |
| 801 | 2 | |a RU |b 63413507 |c 20220607 |g RCR | |
| 856 | 4 | |u http://earchive.tpu.ru/handle/11683/71107 | |
| 856 | 4 | |u https://doi.org/10.3390/met11111742 | |
| 942 | |c CF | ||