Effect of treatment process on the formability of Fe–Al alloy powders and the crushing strength of green compacts
To improve the formability of Fe–Al alloy powders and the crushing strength of green compacts, the effects of hydrogen reduction and vacuum annealing on the morphology and properties of the Fe–Al alloy powders were analyzed, and the forming rate of the tube billets made from the original powders and...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Powder Metallurgy Technology
2022-06-01
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| Series: | Fenmo yejin jishu |
| Subjects: | |
| Online Access: | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2020040010 |
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| _version_ | 1850246900648771584 |
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| author | DENG Ying WU Yin-jiang NAN Hai-juan LIANG Yong-ren MENG Qiang |
| author_facet | DENG Ying WU Yin-jiang NAN Hai-juan LIANG Yong-ren MENG Qiang |
| author_sort | DENG Ying |
| collection | DOAJ |
| description | To improve the formability of Fe–Al alloy powders and the crushing strength of green compacts, the effects of hydrogen reduction and vacuum annealing on the morphology and properties of the Fe–Al alloy powders were analyzed, and the forming rate of the tube billets made from the original powders and the treated powders were studied. The results show that, after the hydrogen reduction and vacuum anneal treatment, the morphology of the original Fe–Al alloy powders has little change, the powder properties are enhanced, and the crushing strength and formability of the green compacts are improved. Especially after the vacuum anneal treatment, the powder properties are significantly enhanced, oxygen mass fraction decrease from 0.5% to 0.2%, apparent density decrease from 1.82 g·cm−3 to 1.64 g·cm−3, microhardness decrease from HV 260 to HV 158, compression ratio decrease from 63% to 56%, crushing strength of the green compact increase from 2.0 MPa to 2.7 MPa, the formability is greatly improved. In the quantity production of long tube billets, the vacuum annealing pretreatment of the original Fe–Al alloy powders can effectively increase the qualified rate of the long tube billets from 50% to 100% and reduce the product cost. |
| format | Article |
| id | doaj-art-af7e87d4177449c282aa4daee3bbcc41 |
| institution | OA Journals |
| issn | 1001-3784 |
| language | zho |
| publishDate | 2022-06-01 |
| publisher | Editorial Office of Powder Metallurgy Technology |
| record_format | Article |
| series | Fenmo yejin jishu |
| spelling | doaj-art-af7e87d4177449c282aa4daee3bbcc412025-08-20T01:59:04ZzhoEditorial Office of Powder Metallurgy TechnologyFenmo yejin jishu1001-37842022-06-0140322623110.19591/j.cnki.cn11-1974/tf.2020040010Effect of treatment process on the formability of Fe–Al alloy powders and the crushing strength of green compactsDENG Ying0WU Yin-jiang1NAN Hai-juan2LIANG Yong-ren3MENG Qiang4Western Baode Technologies Co., Ltd., Northwest Institute for Nonferrous Metal Research, Xi’ an 710201, ChinaWestern Baode Technologies Co., Ltd., Northwest Institute for Nonferrous Metal Research, Xi’ an 710201, ChinaWestern Baode Technologies Co., Ltd., Northwest Institute for Nonferrous Metal Research, Xi’ an 710201, ChinaWestern Baode Technologies Co., Ltd., Northwest Institute for Nonferrous Metal Research, Xi’ an 710201, ChinaXi’ an Changfeng Research Institute of Mechanism and Electricity, Xi’ an 710065, ChinaTo improve the formability of Fe–Al alloy powders and the crushing strength of green compacts, the effects of hydrogen reduction and vacuum annealing on the morphology and properties of the Fe–Al alloy powders were analyzed, and the forming rate of the tube billets made from the original powders and the treated powders were studied. The results show that, after the hydrogen reduction and vacuum anneal treatment, the morphology of the original Fe–Al alloy powders has little change, the powder properties are enhanced, and the crushing strength and formability of the green compacts are improved. Especially after the vacuum anneal treatment, the powder properties are significantly enhanced, oxygen mass fraction decrease from 0.5% to 0.2%, apparent density decrease from 1.82 g·cm−3 to 1.64 g·cm−3, microhardness decrease from HV 260 to HV 158, compression ratio decrease from 63% to 56%, crushing strength of the green compact increase from 2.0 MPa to 2.7 MPa, the formability is greatly improved. In the quantity production of long tube billets, the vacuum annealing pretreatment of the original Fe–Al alloy powders can effectively increase the qualified rate of the long tube billets from 50% to 100% and reduce the product cost.https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2020040010fe–al alloy powdershydrogen reductionvacuum annealingporous propertycrushing strength |
| spellingShingle | DENG Ying WU Yin-jiang NAN Hai-juan LIANG Yong-ren MENG Qiang Effect of treatment process on the formability of Fe–Al alloy powders and the crushing strength of green compacts Fenmo yejin jishu fe–al alloy powders hydrogen reduction vacuum annealing porous property crushing strength |
| title | Effect of treatment process on the formability of Fe–Al alloy powders and the crushing strength of green compacts |
| title_full | Effect of treatment process on the formability of Fe–Al alloy powders and the crushing strength of green compacts |
| title_fullStr | Effect of treatment process on the formability of Fe–Al alloy powders and the crushing strength of green compacts |
| title_full_unstemmed | Effect of treatment process on the formability of Fe–Al alloy powders and the crushing strength of green compacts |
| title_short | Effect of treatment process on the formability of Fe–Al alloy powders and the crushing strength of green compacts |
| title_sort | effect of treatment process on the formability of fe al alloy powders and the crushing strength of green compacts |
| topic | fe–al alloy powders hydrogen reduction vacuum annealing porous property crushing strength |
| url | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2020040010 |
| work_keys_str_mv | AT dengying effectoftreatmentprocessontheformabilityoffealalloypowdersandthecrushingstrengthofgreencompacts AT wuyinjiang effectoftreatmentprocessontheformabilityoffealalloypowdersandthecrushingstrengthofgreencompacts AT nanhaijuan effectoftreatmentprocessontheformabilityoffealalloypowdersandthecrushingstrengthofgreencompacts AT liangyongren effectoftreatmentprocessontheformabilityoffealalloypowdersandthecrushingstrengthofgreencompacts AT mengqiang effectoftreatmentprocessontheformabilityoffealalloypowdersandthecrushingstrengthofgreencompacts |