Microstructure Evolution and Mechanical Properties of B<sub>4</sub>C-Reinforced TC11 + xFe Composites Fabricated by HIP
The present study involved (TiB + TiC)/TC11 (Ti-6.5Al-3.5Mo-1.2Zr-0.3Si) + xFe titanium matrix composites (TMCs) reinforced by in situ TiB whiskers and TiC particles fabricated by hot isostatic pressing. Microstructure observation reveals a substantial distribution of in situ reinforcements, which f...
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2025-01-01
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| author | Shenwei Qian Nan Wang Feng Chen Yangyang Sun Jiong Zhao Hui Chang Liang Feng Lian Zhou |
| author_facet | Shenwei Qian Nan Wang Feng Chen Yangyang Sun Jiong Zhao Hui Chang Liang Feng Lian Zhou |
| author_sort | Shenwei Qian |
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| description | The present study involved (TiB + TiC)/TC11 (Ti-6.5Al-3.5Mo-1.2Zr-0.3Si) + xFe titanium matrix composites (TMCs) reinforced by in situ TiB whiskers and TiC particles fabricated by hot isostatic pressing. Microstructure observation reveals a substantial distribution of in situ reinforcements, which form a network-reinforced structure at the prior particle boundaries of the TC11 matrix. The micro–nanoscale TiB whiskers and TiC particles within and surrounding this network serve as effective dislocation pinning. The enhancement of mechanical properties can be attributed to load-bearing strengthening, fine-grain strengthening, and dislocation strengthening. The hardness and compressive strengths were investigated through mechanical properties testing. The hardness increased by 19.4% (2 wt% B<sub>4</sub>C-reinforced composites) compared with TC11 alloy. However, the addition of 2 wt% Fe at the same B<sub>4</sub>C level (2 wt% B<sub>4</sub>C + 2 wt% Fe-reinforced composites) resulted in a significant increase in hardness by 37.5% and 15.2% in compressive strengths of TMC and can be attributed to the solid solution strengthening effect and higher dislocation density provided by the addition of Fe. In addition, the optimal overall properties can be achieved by strictly regulating the addition ratio of 2 wt% Fe and 1 wt% B<sub>4</sub>C, allowing for a compressive strength of 2301 MPa while still maintaining a compressive strain of 24.6%. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
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| series | Metals |
| spelling | doaj-art-707a15e764724c1ca9fc9d689ef73f8d2025-01-24T13:41:28ZengMDPI AGMetals2075-47012025-01-011513710.3390/met15010037Microstructure Evolution and Mechanical Properties of B<sub>4</sub>C-Reinforced TC11 + xFe Composites Fabricated by HIPShenwei Qian0Nan Wang1Feng Chen2Yangyang Sun3Jiong Zhao4Hui Chang5Liang Feng6Lian Zhou7Tech Institute for Advanced Materials, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaTech Institute for Advanced Materials, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaTech Institute for Advanced Materials, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaTech Institute for Advanced Materials, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaJiangsu Tiangong Technology Co., Ltd., Zhenjiang 212400, ChinaTech Institute for Advanced Materials, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaTech Institute for Advanced Materials, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaTech Institute for Advanced Materials, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaThe present study involved (TiB + TiC)/TC11 (Ti-6.5Al-3.5Mo-1.2Zr-0.3Si) + xFe titanium matrix composites (TMCs) reinforced by in situ TiB whiskers and TiC particles fabricated by hot isostatic pressing. Microstructure observation reveals a substantial distribution of in situ reinforcements, which form a network-reinforced structure at the prior particle boundaries of the TC11 matrix. The micro–nanoscale TiB whiskers and TiC particles within and surrounding this network serve as effective dislocation pinning. The enhancement of mechanical properties can be attributed to load-bearing strengthening, fine-grain strengthening, and dislocation strengthening. The hardness and compressive strengths were investigated through mechanical properties testing. The hardness increased by 19.4% (2 wt% B<sub>4</sub>C-reinforced composites) compared with TC11 alloy. However, the addition of 2 wt% Fe at the same B<sub>4</sub>C level (2 wt% B<sub>4</sub>C + 2 wt% Fe-reinforced composites) resulted in a significant increase in hardness by 37.5% and 15.2% in compressive strengths of TMC and can be attributed to the solid solution strengthening effect and higher dislocation density provided by the addition of Fe. In addition, the optimal overall properties can be achieved by strictly regulating the addition ratio of 2 wt% Fe and 1 wt% B<sub>4</sub>C, allowing for a compressive strength of 2301 MPa while still maintaining a compressive strain of 24.6%.https://www.mdpi.com/2075-4701/15/1/37titanium matrix compositeshot isostatic pressureB<sub>4</sub>Cmechanical propertiesmicrostructure |
| spellingShingle | Shenwei Qian Nan Wang Feng Chen Yangyang Sun Jiong Zhao Hui Chang Liang Feng Lian Zhou Microstructure Evolution and Mechanical Properties of B<sub>4</sub>C-Reinforced TC11 + xFe Composites Fabricated by HIP Metals titanium matrix composites hot isostatic pressure B<sub>4</sub>C mechanical properties microstructure |
| title | Microstructure Evolution and Mechanical Properties of B<sub>4</sub>C-Reinforced TC11 + xFe Composites Fabricated by HIP |
| title_full | Microstructure Evolution and Mechanical Properties of B<sub>4</sub>C-Reinforced TC11 + xFe Composites Fabricated by HIP |
| title_fullStr | Microstructure Evolution and Mechanical Properties of B<sub>4</sub>C-Reinforced TC11 + xFe Composites Fabricated by HIP |
| title_full_unstemmed | Microstructure Evolution and Mechanical Properties of B<sub>4</sub>C-Reinforced TC11 + xFe Composites Fabricated by HIP |
| title_short | Microstructure Evolution and Mechanical Properties of B<sub>4</sub>C-Reinforced TC11 + xFe Composites Fabricated by HIP |
| title_sort | microstructure evolution and mechanical properties of b sub 4 sub c reinforced tc11 xfe composites fabricated by hip |
| topic | titanium matrix composites hot isostatic pressure B<sub>4</sub>C mechanical properties microstructure |
| url | https://www.mdpi.com/2075-4701/15/1/37 |
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