| 引用本文: | 范超,孔见.全金属组元铁基块体非晶的制备与性能研究[J].材料科学与工艺,2019,27(2):56-59.DOI:10.11951/j.issn.1005-0299.20170437. |
| FAN Chao,KONG Jian.Preparation and properties of all-metal group Fe-based bulk metallic amorphous alloys[J].Materials Science and Technology,2019,27(2):56-59.DOI:10.11951/j.issn.1005-0299.20170437. |
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| 摘要: |
| 为了获得良好的玻璃形成能力，通常在铁基非晶合金中添加类金属元素(P、C、B、Si等)，但这些铁基非晶合金大多室温塑性很差, 且其脆性与其类金属元素的种类、含量以及分布有密切关系，因而本文选取全金属组元铁基非晶合金(Fe0.52Co0.3Ni0.18)73Cr17Zr10，通过旋淬甩带与铜模喷铸的方法分别制备了条带与块体试样，并采用X射线衍射仪(XRD)、差示扫描量热仪(DSC)、万能试验机等进行了相关性能研究.研究表明：(Fe0.52Co0.3Ni0.18)73Cr17Zr10的临界尺寸在1~2 mm，玻璃转变温度为482 ℃，过冷液相区达到70 ℃；直径为1 mm的非晶棒材的屈服强度为2 190 MPa，断裂强度达到2 800 MPa，塑性应变量为3.6%.全金属成分中更多的金属-金属键合方式可能是其拥有较好塑性的原因. |
| 关键词: 铁基块体非晶合金 全金属组元 铜模喷铸 塑性 强度 |
| DOI：10.11951/j.issn.1005-0299.20170437 |
| 分类号:TG139.8 |
| 文献标识码:A |
| 基金项目: |
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| Preparation and properties of all-metal group Fe-based bulk metallic amorphous alloys |
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FAN Chao, KONG Jian
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(School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 20094, China)
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| Abstract: |
| In order to obtain good glass-forming ability, metalloid elements (P, C, B, Si, etc.) are usually added to the Fe-based metallic glasses, but most of these Fe-based metallic glasses have poor room-temperature plasticity. The study shows that the brittleness of Fe-based metallic glasses is closely related to the type, content and distribution of their metal-like elements. So all metal components of Fe-based metallic glass (Fe0.52Co0.3Ni0.18)73Cr17Zr10 were selected in this study, ribbon and bulk samples were prepared by spin-quenching and copper casting. The related performance was studied using X-ray diffraction (XRD), differential scanning calorimetry (DSC) and universal testing machine. Studies have shown that (Fe0.52Co0.3Ni0.18)73Cr17Zr10 with the critical size between 1~2 mm, the glass transition temperature of 482 ℃, supercooled liquid region of 70 ℃. The yield strength of a rod with a diameter of 1 mm is 2 190 MPa, the fracture strength reaches 2 800 MPa, and the plastic strain is 3.6%. The more metal-to-metal bonding among the all-metal constituents may be the reason of its better ductility. |
| Key words: Fe-based bulk metallic glasses all metal component copper casting plasticity strength |
