Al对Ti-Zr-Cu-Ni-Be非晶合金热稳定性和力学性能的影响

胡锐; 郑永健; 寇宏超; 李金山; 薛祥义; 周廉; 傅恒志

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Al对Ti-Zr-Cu-Ni-Be非晶合金热稳定性和力学性能的影响
Effects of Al Addition on Thermal Stability and Mechanical Properties of Ti₄₀Zr₂₅Cu₈Ni₉Be₁₈Amorphous Alloy
2007年第3期页码：168-171
纸质出版日期： 2007 ，
DOI：

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[1]胡锐,郑永健,寇宏超,李金山,薛祥义,周廉,傅恒志.Al对Ti-Zr-Cu-Ni-Be非晶合金热稳定性和力学性能的影响[J].特种铸造及有色合金,2007(03):168-171+159.

Hu Rui1, Zheng Yongjian1, Kou Hongchao1, et al. Effects of Al Addition on Thermal Stability and Mechanical Properties of Ti₄₀Zr₂₅Cu₈Ni₉Be₁₈Amorphous Alloy[J]. Special Casting & Nonferrous Alloys, 2007,(3):168-171.
[1]胡锐,郑永健,寇宏超,李金山,薛祥义,周廉,傅恒志.Al对Ti-Zr-Cu-Ni-Be非晶合金热稳定性和力学性能的影响[J].特种铸造及有色合金,2007(03):168-171+159. DOI：

Hu Rui1, Zheng Yongjian1, Kou Hongchao1, et al. Effects of Al Addition on Thermal Stability and Mechanical Properties of Ti₄₀Zr₂₅Cu₈Ni₉Be₁₈Amorphous Alloy[J]. Special Casting & Nonferrous Alloys, 2007,(3):168-171. DOI：

摘要

利用X射线衍射（XRD）、透射电镜（TEM）、差示扫描量热（DSC）和室温压缩试验等分析手段

通过替代（Ti40Zr20Cu8Ni9Be18Al5）和掺杂[（Ti40Zr25Cu8Ni9Be18）0.95Al0.05)]两种元素添加方法

研究了5%（摩尔分数）Al元素对Ti40Zr25Cu8Ni9Be18非晶合金铸态组织、热稳定性和力学性能的影响。替代和掺杂的Al元素使直径为3mm的非晶合金棒状试样中分别析出了纳米晶和准晶。Al替代Zr使非晶合金薄带试样的过冷液相区从46K升高到50K

而以掺杂方式添加时却使其降低为31K。替代方式添加的Al元素使非晶合金的压缩断裂强度从1924MPa提高到2121MPa

但塑性应变从3.9%降低到了0.2%;而掺杂方式添加的Al元素使非晶合金强度降低为1475MPa

并呈现零塑性。

Abstract

Effects of 5% Al content（atom）on the microstructure

thermal stability and mechanical properties of Ti40Zr25Cu8Ni9Be18 amorphous alloy in substituting and doping methods have been investigated by XRD

TEM

DSC and ambient compression testing.The experimental results demonstrate that the nano-crystalline and quasicrystalline in the amorphous alloy rod with 3 mm in diameters are precipitated respectively with Al addition in substituting and doping methods.The undercooled liquid region of the amorphous alloy ribbons is increased from 41 K to 50 K in substituting methods while is decreased to 31 K in doping method.The compressive fracture stress is increased from 1 924 MPa to 2 121 MPa and the plastic strain is decreased from 3.9% to 0.2% in substituting method while is decreased to 1 475 MPa and exhibits plastic free strain in doping method with Al addition.