全金属组元铁基块体非晶的制备与性能研究
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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(Fe_(0.52)Co_(0.3)Ni_(0.18))_(73)Cr_(17)Zr_(10),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:(Fe_(0.52)Co_(0.3)Ni_(0.18))_(73)Cr_(17)Zr_(10)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.
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(Fe_(0.52)Co_(0.3)Ni_(0.18))_(73)Cr_(17)Zr_(10) 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(Fe_(0.52)Co_(0.3)Ni_(0.18))_(73)Cr_(17)Zr_(10) 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.
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(Fe_(0.52)Co_(0.3)Ni_(0.18))_(73)Cr_(17)Zr_(10) 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(Fe_(0.52)Co_(0.3)Ni_(0.18))_(73)Cr_(17)Zr_(10) 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.
引文
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[16] 袁晨晨.金属玻璃的键态特征与塑性起源[J].物理学报,2017,66(17):176402-176402.YUAN Chenchen.Key state characteristics and plastic origin of metallic glass [J].Acta Physica Sinica,2017,66 (17):176402-176402.DOI:10.7498/aps.66.176402
[2] SI J,MEI J,WANG R,et al.Fe-B-Si-Zr bulk metallic glasses with ultrahigh compressive strength and excellent soft magnetic properties[J].Materials Letters,2016,181:282-284.DOI:10.1016/j.matlet.2016.06.052
[3] WANG F,INOUE A,HAN Y,et al.Soft magnetic Fe-Co-based amorphous alloys with extremely high saturation magnetization exceeding 1.9 T and low coercivity of 2 A/m[J].Journal of Alloys and Compounds,2017,723:376-384.DOI:10.1016/j.jallcom.2017.06.192
[4] HAN Y,KONG F,CHANG C,et al.Syntheses and corrosion behaviors of Fe-based amorphous soft magnetic alloys with high-saturation magnetization near 1.7 T[J].Journal of Materials Research,2015,30(4):547-555.DOI:10.1557/jmr.2014.389
[5] LU Z P,LIU C T,THOMPSON J R,et al.Structural amorphous steels[J].Physical Review Letters,2004,92(24):245503.DOI:10.1103/PhysRevLett.92.245503
[6] WANG W H.Roles of minor additions in formation and properties of bulk metallic glasses[J].Progress in Materials Science,2007,52(4):540-596.DOI:10.1016/j.pmatsci.2006.07.003
[7] LI J F,WANG X,LIU X,et al.Effect of fluxing treatment on the properties of Fe66Co15Mo1P7.5C5.5B2Si3 bulk metallic glass by water quenching[J].Physica B:Condensed Matter,2018,528:24-26.DOI:10.1016/j.physb.2017.10.061
[8] KUMAR G,OHNUMA M,FURUBAYASHI T,et al.Thermal embrittlement of Fe-based amorphous ribbons[J].Journal of Non-Crystalline Solids,2008,354(10):882-888.DOI:10.1016/j.jnoncrysol.2007.08.001
[9] TAO P J,YANG Y Z,BAI X J,et al.Zr-based bulk metallic glass with super-plasticity under uniaxial compression at room temperature[J].Journal of Non-Crystalline Solids,2008,354(31):3742-3746.DOI:10.1016/j.jnoncrysol.2008.04.012
[10] KIM K B,DAS J,VENKATARAMAN S,et al.Work hardening ability of ductile Ti45Cu40Ni7.5Zr5Sn2.5 and Cu47.5Zr47.5Al5 bulk metallic glasses[J].Applied physics letters,2006,89(7):071908.DOI:10.1063/1.2337534
[11] XIE C,YANG Y,ZHONG S,et al.Formation,magnetic properties and bending deformation of Fe-based amorphous alloy without metalloids[J].Journal of Alloys and Compounds,2017,695:877-880.DOI:10.1016/j.jallcom.2016.10.182
[12] TAKEUCHI A,INOUE A.Classification of bulk metallic glasses by atomic size difference,heat of mixing and period of constituent elements and its application to characterization of the main alloying element[J].Materials Transactions,2005,46(12):2817-2829.DOI:10.2320/matertrans.46.2817
[13] SPAEPEN F.A microscopic mechanism for steady state inhomogeneous flow in metallic glasses[J].Acta Metallurgica,1977,25(4):407-415.DOI:10.1016/0001-6160(77)90232-2
[14] SPAEPEN F.Homogeneous flow of metallic glasses:A free volume perspective[J].Scripta Materialia,2006,54(3):363-367.DOI:10.1016/j.scriptamat.2005.09.046
[15] YANG W,LIU H,ZHAO Y,et al.Mechanical properties and structural features of novel Fe-based bulk metallic glasses with unprecedented plasticity[J].Scientific reports,2014,4:6233.DOI:10.1038/srep06233
[16] 袁晨晨.金属玻璃的键态特征与塑性起源[J].物理学报,2017,66(17):176402-176402.YUAN Chenchen.Key state characteristics and plastic origin of metallic glass [J].Acta Physica Sinica,2017,66 (17):176402-176402.DOI:10.7498/aps.66.176402