Cu添加对La-Al-Ni合金玻璃形成能力的影响
|
摘要
对La_(62)Al_(14)Ni_(24-x)Cu_x合金的玻璃形成能力和热力学性能进行了研究。结果表明,通过微量Cu元素的添加,La_(62)Al_(14)Ni_(24)的玻璃形成能够得到了显著提高,临界直径由原来的2 mm增加到10 mm。其中,具有高玻璃形成能力La_(62)Al_(14)Ni_(14)Cu_(10)合金的过冷液相区(ΔT_x)为39 K,高于其余的金属玻璃。在热力学框架内讨论不同合金的玻璃形成能力,研究发现,在目前所研究的La-Al-Ni-Cu中,玻璃形成能力越高,过冷液态区ΔT_x,参数γ与约化玻璃转变温度Trg值越大。
The glass forming ability(GFA) and thermodynamic properties of La_(62)Al_(14)Ni_(24-x)Cu_x alloy were investigated. The experimental results show that the GFA of La_(62)Al_(14)Ni_(24) can be significantly improved by the addition of minor Cu element.The critical diameters of the alloys increase from 2 mm of La_(62)Al_(14)Ni_(24) alloy to 10 mm of La_(62)Al_(14)Ni_(14)Cu_(10) alloy. The supercooled liquid region(ΔT_x) of La_(62)Al_(14)Ni_(14)Cu_(10) alloy with high glass forming ability is 39 K, which is higher than the other of the metallic glasses. The thermodynamic of the alloys with different GFA was discussed. The results show that, in the present La-Al-Ni-Cu alloys, the higher the GFA is, the larger the ΔT_x value, the γ value and the Trgvalue that is a reduced glass transition temperature.
The glass forming ability(GFA) and thermodynamic properties of La_(62)Al_(14)Ni_(24-x)Cu_x alloy were investigated. The experimental results show that the GFA of La_(62)Al_(14)Ni_(24) can be significantly improved by the addition of minor Cu element.The critical diameters of the alloys increase from 2 mm of La_(62)Al_(14)Ni_(24) alloy to 10 mm of La_(62)Al_(14)Ni_(14)Cu_(10) alloy. The supercooled liquid region(ΔT_x) of La_(62)Al_(14)Ni_(14)Cu_(10) alloy with high glass forming ability is 39 K, which is higher than the other of the metallic glasses. The thermodynamic of the alloys with different GFA was discussed. The results show that, in the present La-Al-Ni-Cu alloys, the higher the GFA is, the larger the ΔT_x value, the γ value and the Trgvalue that is a reduced glass transition temperature.
引文
[1]李达,宋瑞波,弓素莲,等.退火对(Fe50Co25Si10B15)70Cu30非晶薄带磁性的影响[J].铸造技术,2015,36(9):2221-2224.
[2]姚建忠,寇生中,于朋,等.Zr60Al10Cu30合金的玻璃形成能力和力学性能[J].铸造技术,2012,33(10):1139-1141.
[3]Tan H,Zhang Y,Ma D,et al.Optimum glass formation at off-eutectic composition and its relation to skewed eutectic coupled zone in the La based La-Al-(Cu,Ni)pseudo ternary system[J].Acta Materialia,2003,51:4551-4561.
[4]Li R,Pang S J,Ma C L,et al.Influence of similar atom substituion on glass formation in(La-Ce)-Al-Co bulk metallic glasses[J].Acta Materialia,2007,55:3719-3726.
[5]Jiang Q K,Zhang G Q,Yang L,et al.La-based bulk metallic glasses with critical diameter up to 30 mm[J].Acta Materialia,2007,55:4409-4418.
[6]Li P Y,Meng F Y,Wang Y S,et al.Glass forming ability and thermodynamic properties in novel La-Al-Cu-Co bulk metallic glasses[J].Journal of Rare Earths,2015,33(9):972-976.
[7]Inoue A,Zhang T,Masumoto T.Al-La-Cu amorphous alloys with a wide supercooled liquid region[J].Materials Transactions JIM,1990,31:425-428.
[8]Inoue A,Nakamura T,Sugita T,et al.Bulky La-Al-TM(TM=Transition Metal)amorphous alloys with high tensile strength produced by a high-pressure die casting method[J].Materials Transactions JIM,1993,34:351-358.
[9]Inoue A.High strength bulk amorphous alloys with low critical cooling rates[J].Materials Transactions JIM,1995,36:866-867.
[10]Turnbull D.Under what conditions can a glass be formed[J].Contempt Physial,1969,10:473-478.
[11]Lu Z P,Liu C T.A new glass-forming ability of materials:a thermodynamic glasses[J].Acta Materialia,2002,50:3501-351.
[12]Li P Y,Wang G,Ding D,et al.Determination of accurate theoretical values for thermodynamic properties in bulk metallic glasses[J].Advance in Manufacturing,2013,1:293-304.
[13]Shen J,Zou J,Ye L,et al.Glass-forming ability and thermal stability of a new bulk metallic glass in the quaternary Zr-Cu-Ni-Al system[J].Journal of Non-Crystalline Solids,2005:2519-2523.
[2]姚建忠,寇生中,于朋,等.Zr60Al10Cu30合金的玻璃形成能力和力学性能[J].铸造技术,2012,33(10):1139-1141.
[3]Tan H,Zhang Y,Ma D,et al.Optimum glass formation at off-eutectic composition and its relation to skewed eutectic coupled zone in the La based La-Al-(Cu,Ni)pseudo ternary system[J].Acta Materialia,2003,51:4551-4561.
[4]Li R,Pang S J,Ma C L,et al.Influence of similar atom substituion on glass formation in(La-Ce)-Al-Co bulk metallic glasses[J].Acta Materialia,2007,55:3719-3726.
[5]Jiang Q K,Zhang G Q,Yang L,et al.La-based bulk metallic glasses with critical diameter up to 30 mm[J].Acta Materialia,2007,55:4409-4418.
[6]Li P Y,Meng F Y,Wang Y S,et al.Glass forming ability and thermodynamic properties in novel La-Al-Cu-Co bulk metallic glasses[J].Journal of Rare Earths,2015,33(9):972-976.
[7]Inoue A,Zhang T,Masumoto T.Al-La-Cu amorphous alloys with a wide supercooled liquid region[J].Materials Transactions JIM,1990,31:425-428.
[8]Inoue A,Nakamura T,Sugita T,et al.Bulky La-Al-TM(TM=Transition Metal)amorphous alloys with high tensile strength produced by a high-pressure die casting method[J].Materials Transactions JIM,1993,34:351-358.
[9]Inoue A.High strength bulk amorphous alloys with low critical cooling rates[J].Materials Transactions JIM,1995,36:866-867.
[10]Turnbull D.Under what conditions can a glass be formed[J].Contempt Physial,1969,10:473-478.
[11]Lu Z P,Liu C T.A new glass-forming ability of materials:a thermodynamic glasses[J].Acta Materialia,2002,50:3501-351.
[12]Li P Y,Wang G,Ding D,et al.Determination of accurate theoretical values for thermodynamic properties in bulk metallic glasses[J].Advance in Manufacturing,2013,1:293-304.
[13]Shen J,Zou J,Ye L,et al.Glass-forming ability and thermal stability of a new bulk metallic glass in the quaternary Zr-Cu-Ni-Al system[J].Journal of Non-Crystalline Solids,2005:2519-2523.