Formation of a porous titanium part under directed energy deposition: theory and experiment; High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes; Vol. 23, iss. 1
| Parent link: | High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes.— , 1997- Vol. 23, iss. 1.— 2018.— [P. 1-23] |
|---|---|
| Autor corporatiu: | , |
| Altres autors: | , , , , |
| Sumari: | Title screen Despite the enormous number of works devoted to the creation of materials and products by the technologies of selective laser melting (SLM) and electron-beam melting (EBM), there remained a lot of problems connected with the uniqueness of concrete results that cannot be transferred to other three-dimensional production conditions and even to other geometries and dimensions. The current work proposes a model of the process of growth of an object on the basis of minimal experimental information with due consideration of melting and shrinkage. The shrinkage occurs due to the porosity evolution, which affects the volumetric heat capacity and heat conductivity of a melted layer, while in the case of laser radiation, it also affects the coefficient of laser radiation reflection. Titanium was chosen as the object of study, since it is widely used in various additive manufacturing technologies. The work demonstrates that EBM is an appreciably nonstationary process, and its results cannot be assessed by the analysis of temperature in a single track. In the case of laser radiation, the quasi-stationary melting regime at limited time intervals can be established, which is caused by competing factors of heating and heat loss through different mechanisms. The work numerically demonstrates the possibility of obtaining a regular structure, if adequate technological parameters are chosen. This agrees qualitatively with the experiment. To estimate the effective mechanical properties of obtained materials based on the data of their structure, a micromechanical model was used. Режим доступа: по договору с организацией-держателем ресурса |
| Idioma: | anglès |
| Publicat: |
2018
|
| Matèries: | |
| Accés en línia: | http://dx.doi.org/10.1615/HighTempMatProc.2018029386 |
| Format: | MixedMaterials Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=659086 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 659086 | ||
| 005 | 20250305161930.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\27433 | ||
| 090 | |a 659086 | ||
| 100 | |a 20181227d2018 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Formation of a porous titanium part under directed energy deposition: theory and experiment |f M. A. Anisimova [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 330 | |a Despite the enormous number of works devoted to the creation of materials and products by the technologies of selective laser melting (SLM) and electron-beam melting (EBM), there remained a lot of problems connected with the uniqueness of concrete results that cannot be transferred to other three-dimensional production conditions and even to other geometries and dimensions. The current work proposes a model of the process of growth of an object on the basis of minimal experimental information with due consideration of melting and shrinkage. The shrinkage occurs due to the porosity evolution, which affects the volumetric heat capacity and heat conductivity of a melted layer, while in the case of laser radiation, it also affects the coefficient of laser radiation reflection. Titanium was chosen as the object of study, since it is widely used in various additive manufacturing technologies. The work demonstrates that EBM is an appreciably nonstationary process, and its results cannot be assessed by the analysis of temperature in a single track. In the case of laser radiation, the quasi-stationary melting regime at limited time intervals can be established, which is caused by competing factors of heating and heat loss through different mechanisms. The work numerically demonstrates the possibility of obtaining a regular structure, if adequate technological parameters are chosen. This agrees qualitatively with the experiment. To estimate the effective mechanical properties of obtained materials based on the data of their structure, a micromechanical model was used. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | 1 | |t High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes |d 1997- | |
| 463 | 1 | |t Vol. 23, iss. 1 |v [P. 1-23] |d 2018 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a nonstationary temperature field | |
| 610 | 1 | |a porosity evolution | |
| 610 | 1 | |a shrinkage | |
| 610 | 1 | |a convective heat loss | |
| 610 | 1 | |a effective properties | |
| 610 | 1 | |a температурное поле | |
| 610 | 1 | |a пористость | |
| 610 | 1 | |a усадка | |
| 610 | 1 | |a потери теплообмена | |
| 610 | 1 | |a эффективность | |
| 701 | 1 | |a Anisimova |b M. A. |c physicist |c engineer of Tomsk Polytechnic University |f 1988- |g Mariya Aleksandrovna |3 (RuTPU)RU\TPU\pers\34323 |9 17832 | |
| 701 | 1 | |a Knyazeva |b A. G. |c Russian physicist |c Professor of Tomsk Polytechnic University, doctor of physico-mathematical Sciences |f 1962- |g Anna Georgievna |3 (RuTPU)RU\TPU\pers\32712 |9 16597 | |
| 701 | 1 | |a Krinitsyn |b M. G. |c specialist in the field of mechanical engineering |c engineer of Tomsk Polytechnic University |f 1992- |g Maksim Germanovich |3 (RuTPU)RU\TPU\pers\37439 | |
| 701 | 1 | |a Fedorov |b V. V. |c Specialist in the field of mechanical engineering |c Director of Research and Education Center Tomsk Polytechnic University |f 1983- |g Vasilii Viktorovich |3 (RuTPU)RU\TPU\pers\37531 | |
| 701 | 1 | |a Pobol |b I. L. |g Igor Leonidovich | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа новых производственных технологий |b Отделение материаловедения |3 (RuTPU)RU\TPU\col\23508 |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа новых производственных технологий |b Научно-производственная лаборатория "Моделирование технологических процессов" |3 (RuTPU)RU\TPU\col\24937 |
| 801 | 2 | |a RU |b 63413507 |c 20181227 |g RCR | |
| 856 | 4 | |u http://dx.doi.org/10.1615/HighTempMatProc.2018029386 | |
| 942 | |c CF | ||