Effect of annealing temperature on La2O3 strengthened Mo–Re alloys
Molybdenum rhenium alloys are the solid solution strengthening alloys with high melting point and low expansion coefficient, and the addition of rare earth oxides can refine the grains and play a role in dispersion strengthening. Molybdenum−rhenium (Mo–Re) and molybdenum−rhenium−lanthanum (Mo–Re–La2...
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Editorial Office of Powder Metallurgy Technology
2025-02-01
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| Series: | Fenmo yejin jishu |
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| Online Access: | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2023030007 |
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| author | REN Xueting WANG Guangda ZHOU Wuping XIONG Ning |
| author_facet | REN Xueting WANG Guangda ZHOU Wuping XIONG Ning |
| author_sort | REN Xueting |
| collection | DOAJ |
| description | Molybdenum rhenium alloys are the solid solution strengthening alloys with high melting point and low expansion coefficient, and the addition of rare earth oxides can refine the grains and play a role in dispersion strengthening. Molybdenum−rhenium (Mo–Re) and molybdenum−rhenium−lanthanum (Mo–Re–La2O3) alloy plates were prepared by powder metallurgy and cross rolling method in this paper, and were annealed at different temperatures. The microstructure and room temperature tensile fracture morphology of the Mo–Re alloys and Mo–Re–La2O3 alloys annealed at different temperatures were observed by metallographic microscope and scanning electron microscope. The Vickers hardness and room temperature tensile properties of the two alloy plates were compared. The results show that the recrystallization temperature of Mo–Re alloys is about 1200 ℃, while that of the Mo–Re–La2O3 alloys is 1400 ℃. The addition of La2O3 increases the recrystallization temperature by about 200 ℃. With the increase of annealing temperature, the hardness and tensile strength of the Mo–Re alloys and Mo–Re–La2O3 alloys decrease significantly, while the elongation of Mo–Re–La2O3 alloys increases, up to 27.5%. |
| format | Article |
| id | doaj-art-9b2c63baa0fc485fa6c64128e9538b51 |
| institution | DOAJ |
| issn | 1001-3784 |
| language | zho |
| publishDate | 2025-02-01 |
| publisher | Editorial Office of Powder Metallurgy Technology |
| record_format | Article |
| series | Fenmo yejin jishu |
| spelling | doaj-art-9b2c63baa0fc485fa6c64128e9538b512025-08-20T02:57:34ZzhoEditorial Office of Powder Metallurgy TechnologyFenmo yejin jishu1001-37842025-02-01431717810.19591/j.cnki.cn11-1974/tf.2023030007Effect of annealing temperature on La2O3 strengthened Mo–Re alloysREN Xueting0WANG GuangdaZHOU Wuping1XIONG Ning2Central Iron & Steel Research Institute, Beijing 100081, ChinaCentral Iron & Steel Research Institute, Beijing 100081, ChinaAdvanced Technology & Materials Co., Ltd., Beijing 100081, ChinaMolybdenum rhenium alloys are the solid solution strengthening alloys with high melting point and low expansion coefficient, and the addition of rare earth oxides can refine the grains and play a role in dispersion strengthening. Molybdenum−rhenium (Mo–Re) and molybdenum−rhenium−lanthanum (Mo–Re–La2O3) alloy plates were prepared by powder metallurgy and cross rolling method in this paper, and were annealed at different temperatures. The microstructure and room temperature tensile fracture morphology of the Mo–Re alloys and Mo–Re–La2O3 alloys annealed at different temperatures were observed by metallographic microscope and scanning electron microscope. The Vickers hardness and room temperature tensile properties of the two alloy plates were compared. The results show that the recrystallization temperature of Mo–Re alloys is about 1200 ℃, while that of the Mo–Re–La2O3 alloys is 1400 ℃. The addition of La2O3 increases the recrystallization temperature by about 200 ℃. With the increase of annealing temperature, the hardness and tensile strength of the Mo–Re alloys and Mo–Re–La2O3 alloys decrease significantly, while the elongation of Mo–Re–La2O3 alloys increases, up to 27.5%.https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2023030007dispersion strengtheningmolybdenum rhenium alloysannealing processmechanical properties |
| spellingShingle | REN Xueting WANG Guangda ZHOU Wuping XIONG Ning Effect of annealing temperature on La2O3 strengthened Mo–Re alloys Fenmo yejin jishu dispersion strengthening molybdenum rhenium alloys annealing process mechanical properties |
| title | Effect of annealing temperature on La2O3 strengthened Mo–Re alloys |
| title_full | Effect of annealing temperature on La2O3 strengthened Mo–Re alloys |
| title_fullStr | Effect of annealing temperature on La2O3 strengthened Mo–Re alloys |
| title_full_unstemmed | Effect of annealing temperature on La2O3 strengthened Mo–Re alloys |
| title_short | Effect of annealing temperature on La2O3 strengthened Mo–Re alloys |
| title_sort | effect of annealing temperature on la2o3 strengthened mo re alloys |
| topic | dispersion strengthening molybdenum rhenium alloys annealing process mechanical properties |
| url | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2023030007 |
| work_keys_str_mv | AT renxueting effectofannealingtemperatureonla2o3strengthenedmorealloys AT wangguangda effectofannealingtemperatureonla2o3strengthenedmorealloys AT zhouwuping effectofannealingtemperatureonla2o3strengthenedmorealloys AT xiongning effectofannealingtemperatureonla2o3strengthenedmorealloys |