The influence of TiC nanoparticles addition on the microstructure and mechanical properties of IN738LC alloy prepared by EB-PBF
The addition of nano reinforcement particles to improve the mechanical properties of nickel-based superalloys in additive manufacturing has become a current research focus. This paper systematically investigates the effects of adding 1.0 wt% TiC nanoparticles on the microstructure and tensile proper...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525001431 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850043335482277888 |
|---|---|
| author | Wei Wei Yang Li Bo Wei Yuemei Tan Pengcheng Lv Pengxiang Nie Yurong Wang Xiaoyu Liang Ting Long Jun Zhou Feng Lin |
| author_facet | Wei Wei Yang Li Bo Wei Yuemei Tan Pengcheng Lv Pengxiang Nie Yurong Wang Xiaoyu Liang Ting Long Jun Zhou Feng Lin |
| author_sort | Wei Wei |
| collection | DOAJ |
| description | The addition of nano reinforcement particles to improve the mechanical properties of nickel-based superalloys in additive manufacturing has become a current research focus. This paper systematically investigates the effects of adding 1.0 wt% TiC nanoparticles on the microstructure and tensile properties of nickel-based superalloy (IN738LC) prepared by electron beam powder bed fusion (EB-PBF). The results show that the adding of TiC nanoparticles promotes the nucleation of new grains while inhibiting the growth of the original grains, reducing the grain width from 82.09 μm to 28.55 μm. After the addition of TiC, the average size of the secondary γ′ phase decreased by 73.2 %, while the average size of the primary γ′ phase increased by 114.2 %, and the overall amount of γ′ phase increased by 80.6 %. In addition, the average size of MC carbides increased by 17.16 %, and their quantity increased by 96.2 %. At room temperature, the ultimate tensile strength and elongation at fracture of the composite (1.0 wt% TiC/IN738LC) improved by 23 % and 77 %, respectively. Post-tensile testing, the composite exhibited more and larger dimples, with more carbides within the dimples, thus enhancing the alloy’s ductility. The strengthening mechanism of the primary γ′ phase mainly relies on dislocation pile-up and bypassing, improving the material’s strength; the secondary γ′ phase primarily enhances ductility through dislocation cutting. MC carbides cause more dislocation pile-up, further improving the alloy’s resistance to deformation. This paper provides new insights for the development of high-performance nickel-based superalloys. |
| format | Article |
| id | doaj-art-e02ff58f1e464da48c14a2adabe55ca8 |
| institution | DOAJ |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-e02ff58f1e464da48c14a2adabe55ca82025-08-20T02:55:16ZengElsevierMaterials & Design0264-12752025-03-0125111372310.1016/j.matdes.2025.113723The influence of TiC nanoparticles addition on the microstructure and mechanical properties of IN738LC alloy prepared by EB-PBFWei Wei0Yang Li1Bo Wei2Yuemei Tan3Pengcheng Lv4Pengxiang Nie5Yurong Wang6Xiaoyu Liang7Ting Long8Jun Zhou9Feng Lin10Institute of Laser Intelligent Manufacturing and Precision Processing, School of Mechanical Engineering, Guangxi University, Nanning, Guangxi 530004, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, China; Corresponding authors.Department of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaInstitute of Laser Intelligent Manufacturing and Precision Processing, School of Mechanical Engineering, Guangxi University, Nanning, Guangxi 530004, ChinaInstitute of Laser Intelligent Manufacturing and Precision Processing, School of Mechanical Engineering, Guangxi University, Nanning, Guangxi 530004, ChinaInstitute of Laser Intelligent Manufacturing and Precision Processing, School of Mechanical Engineering, Guangxi University, Nanning, Guangxi 530004, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaInstitute of Laser Intelligent Manufacturing and Precision Processing, School of Mechanical Engineering, Guangxi University, Nanning, Guangxi 530004, China; Corresponding authors.Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; Corresponding authors.The addition of nano reinforcement particles to improve the mechanical properties of nickel-based superalloys in additive manufacturing has become a current research focus. This paper systematically investigates the effects of adding 1.0 wt% TiC nanoparticles on the microstructure and tensile properties of nickel-based superalloy (IN738LC) prepared by electron beam powder bed fusion (EB-PBF). The results show that the adding of TiC nanoparticles promotes the nucleation of new grains while inhibiting the growth of the original grains, reducing the grain width from 82.09 μm to 28.55 μm. After the addition of TiC, the average size of the secondary γ′ phase decreased by 73.2 %, while the average size of the primary γ′ phase increased by 114.2 %, and the overall amount of γ′ phase increased by 80.6 %. In addition, the average size of MC carbides increased by 17.16 %, and their quantity increased by 96.2 %. At room temperature, the ultimate tensile strength and elongation at fracture of the composite (1.0 wt% TiC/IN738LC) improved by 23 % and 77 %, respectively. Post-tensile testing, the composite exhibited more and larger dimples, with more carbides within the dimples, thus enhancing the alloy’s ductility. The strengthening mechanism of the primary γ′ phase mainly relies on dislocation pile-up and bypassing, improving the material’s strength; the secondary γ′ phase primarily enhances ductility through dislocation cutting. MC carbides cause more dislocation pile-up, further improving the alloy’s resistance to deformation. This paper provides new insights for the development of high-performance nickel-based superalloys.http://www.sciencedirect.com/science/article/pii/S0264127525001431TiC nanoparticlesNon-weldable nickel-based superalloysElectron beam powder bed fusionMicrostructureMechanical properties |
| spellingShingle | Wei Wei Yang Li Bo Wei Yuemei Tan Pengcheng Lv Pengxiang Nie Yurong Wang Xiaoyu Liang Ting Long Jun Zhou Feng Lin The influence of TiC nanoparticles addition on the microstructure and mechanical properties of IN738LC alloy prepared by EB-PBF Materials & Design TiC nanoparticles Non-weldable nickel-based superalloys Electron beam powder bed fusion Microstructure Mechanical properties |
| title | The influence of TiC nanoparticles addition on the microstructure and mechanical properties of IN738LC alloy prepared by EB-PBF |
| title_full | The influence of TiC nanoparticles addition on the microstructure and mechanical properties of IN738LC alloy prepared by EB-PBF |
| title_fullStr | The influence of TiC nanoparticles addition on the microstructure and mechanical properties of IN738LC alloy prepared by EB-PBF |
| title_full_unstemmed | The influence of TiC nanoparticles addition on the microstructure and mechanical properties of IN738LC alloy prepared by EB-PBF |
| title_short | The influence of TiC nanoparticles addition on the microstructure and mechanical properties of IN738LC alloy prepared by EB-PBF |
| title_sort | influence of tic nanoparticles addition on the microstructure and mechanical properties of in738lc alloy prepared by eb pbf |
| topic | TiC nanoparticles Non-weldable nickel-based superalloys Electron beam powder bed fusion Microstructure Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525001431 |
| work_keys_str_mv | AT weiwei theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT yangli theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT bowei theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT yuemeitan theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT pengchenglv theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT pengxiangnie theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT yurongwang theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT xiaoyuliang theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT tinglong theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT junzhou theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT fenglin theinfluenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT weiwei influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT yangli influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT bowei influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT yuemeitan influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT pengchenglv influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT pengxiangnie influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT yurongwang influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT xiaoyuliang influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT tinglong influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT junzhou influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf AT fenglin influenceofticnanoparticlesadditiononthemicrostructureandmechanicalpropertiesofin738lcalloypreparedbyebpbf |