Crystallization of Fe-W-B Amorphous Powder Prepared by Gas Atomization
In this work, the effects of master alloy composition and annealing temperature on the amorphization and crystallization behavior of Fe-W-B powders prepared by gas atomization using compacts of Fe, W and B powder mixture were systematically studied. The results show that only the master alloy with h...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-10-01
|
| Series: | Metals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4701/12/11/1855 |
| _version_ | 1797467280455499776 |
|---|---|
| author | Shuwang Ma Zheng Lv Jian Wang Haicheng Wang Jian Yang Zhimin Yang Jingli Li Zhiyong Xue |
| author_facet | Shuwang Ma Zheng Lv Jian Wang Haicheng Wang Jian Yang Zhimin Yang Jingli Li Zhiyong Xue |
| author_sort | Shuwang Ma |
| collection | DOAJ |
| description | In this work, the effects of master alloy composition and annealing temperature on the amorphization and crystallization behavior of Fe-W-B powders prepared by gas atomization using compacts of Fe, W and B powder mixture were systematically studied. The results show that only the master alloy with high content of W (19.9 at.%) and B (13.6 at.%) of the six alloys studied yielded amorphous Fe-W-B powders. The alloying elements W and B are believed to have a glass-forming ability (GFA)-enhancing effect, which together with the high cooling rate of gas atomization leads to the formation of amorphization. The difference in the average particle size of 3–10 μm for the six atomized powders indicates that the master alloys with different W and B contents have different superheat and melt viscosity at the same atomization temperature. The Fe-W-B amorphous powder is structurally stable within 600 °C and crystallizes from the edge of the particles when the temperature increases to 700 °C, and its crystalline precipitates include α-Fe, FeWB and Fe<sub>7</sub>W<sub>6</sub>. The nuclear shielding tests and Monte Carlo N Particle Transport Code (MCNP) calculated results revealed that the Fe-W-B amorphous powder has a much better shielding performance for γ-rays and neutrons than that of iron. This work provides an efficient strategy for fabricating Fe-W-B amorphous powder with promising nuclear shielding potential and sheds light on the crystallization behaviors of this alloy. |
| first_indexed | 2024-03-09T18:51:22Z |
| format | Article |
| id | doaj.art-ead1f387a12b458bb95cf19848705ec7 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T18:51:22Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-ead1f387a12b458bb95cf19848705ec72023-11-24T05:52:13ZengMDPI AGMetals2075-47012022-10-011211185510.3390/met12111855Crystallization of Fe-W-B Amorphous Powder Prepared by Gas AtomizationShuwang Ma0Zheng Lv1Jian Wang2Haicheng Wang3Jian Yang4Zhimin Yang5Jingli Li6Zhiyong Xue7Advanced Electronic Materials Institute, GRIMAT Engineering Institute Co., Ltd., Beijing 101407, ChinaAdvanced Electronic Materials Institute, GRIMAT Engineering Institute Co., Ltd., Beijing 101407, ChinaAdvanced Electronic Materials Institute, GRIMAT Engineering Institute Co., Ltd., Beijing 101407, ChinaAdvanced Electronic Materials Institute, GRIMAT Engineering Institute Co., Ltd., Beijing 101407, ChinaAdvanced Electronic Materials Institute, GRIMAT Engineering Institute Co., Ltd., Beijing 101407, ChinaAdvanced Electronic Materials Institute, GRIMAT Engineering Institute Co., Ltd., Beijing 101407, ChinaInstitute for Advanced Materials, North China Electric Power University, Beijing 102206, ChinaInstitute for Advanced Materials, North China Electric Power University, Beijing 102206, ChinaIn this work, the effects of master alloy composition and annealing temperature on the amorphization and crystallization behavior of Fe-W-B powders prepared by gas atomization using compacts of Fe, W and B powder mixture were systematically studied. The results show that only the master alloy with high content of W (19.9 at.%) and B (13.6 at.%) of the six alloys studied yielded amorphous Fe-W-B powders. The alloying elements W and B are believed to have a glass-forming ability (GFA)-enhancing effect, which together with the high cooling rate of gas atomization leads to the formation of amorphization. The difference in the average particle size of 3–10 μm for the six atomized powders indicates that the master alloys with different W and B contents have different superheat and melt viscosity at the same atomization temperature. The Fe-W-B amorphous powder is structurally stable within 600 °C and crystallizes from the edge of the particles when the temperature increases to 700 °C, and its crystalline precipitates include α-Fe, FeWB and Fe<sub>7</sub>W<sub>6</sub>. The nuclear shielding tests and Monte Carlo N Particle Transport Code (MCNP) calculated results revealed that the Fe-W-B amorphous powder has a much better shielding performance for γ-rays and neutrons than that of iron. This work provides an efficient strategy for fabricating Fe-W-B amorphous powder with promising nuclear shielding potential and sheds light on the crystallization behaviors of this alloy.https://www.mdpi.com/2075-4701/12/11/1855amorphous powdergas atomizationcrystallizationshielding performance |
| spellingShingle | Shuwang Ma Zheng Lv Jian Wang Haicheng Wang Jian Yang Zhimin Yang Jingli Li Zhiyong Xue Crystallization of Fe-W-B Amorphous Powder Prepared by Gas Atomization Metals amorphous powder gas atomization crystallization shielding performance |
| title | Crystallization of Fe-W-B Amorphous Powder Prepared by Gas Atomization |
| title_full | Crystallization of Fe-W-B Amorphous Powder Prepared by Gas Atomization |
| title_fullStr | Crystallization of Fe-W-B Amorphous Powder Prepared by Gas Atomization |
| title_full_unstemmed | Crystallization of Fe-W-B Amorphous Powder Prepared by Gas Atomization |
| title_short | Crystallization of Fe-W-B Amorphous Powder Prepared by Gas Atomization |
| title_sort | crystallization of fe w b amorphous powder prepared by gas atomization |
| topic | amorphous powder gas atomization crystallization shielding performance |
| url | https://www.mdpi.com/2075-4701/12/11/1855 |
| work_keys_str_mv | AT shuwangma crystallizationoffewbamorphouspowderpreparedbygasatomization AT zhenglv crystallizationoffewbamorphouspowderpreparedbygasatomization AT jianwang crystallizationoffewbamorphouspowderpreparedbygasatomization AT haichengwang crystallizationoffewbamorphouspowderpreparedbygasatomization AT jianyang crystallizationoffewbamorphouspowderpreparedbygasatomization AT zhiminyang crystallizationoffewbamorphouspowderpreparedbygasatomization AT jinglili crystallizationoffewbamorphouspowderpreparedbygasatomization AT zhiyongxue crystallizationoffewbamorphouspowderpreparedbygasatomization |