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块体非晶合金

块体非晶合金的相关文献在2001年到2022年内共计468篇,主要集中在金属学与金属工艺、一般工业技术、物理学 等领域,其中期刊论文185篇、会议论文16篇、专利文献422817篇;相关期刊75种,包括材料导报、功能材料、中国有色金属学报等; 相关会议14种,包括第十届中国钢铁年会暨第六届宝钢学术年会、华北地区第二十届热处理技术交流会、第十四全国特种铸造及有色合金学术年会、第八届全国铸造复合材料学术会议、2013甘肃省铸造学术年会等;块体非晶合金的相关文献由747位作者贡献,包括周果君、罗云、蔡安辉等。

块体非晶合金—发文量

期刊论文>

论文:185 占比:0.04%

会议论文>

论文:16 占比:0.00%

专利文献>

论文:422817 占比:99.95%

总计:423018篇

块体非晶合金—发文趋势图

块体非晶合金

-研究学者

  • 周果君
  • 罗云
  • 蔡安辉
  • 张涛
  • 姚可夫
  • 董闯
  • 丁超义
  • 安琪
  • 沈军
  • 王清
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 杨开怀; 叶惠娟; 花能斌
    • 摘要: 采用微米划痕仪和纳米压痕仪研究了法向载荷对Ti_(40)Zr_(10)Cu_(38)Pd_(12)块体非晶合金微米划痕行为和纳米压痕行为的影响。结果表明:随着法向载荷从2 N提高到10 N,非晶合金划痕处的塑性变形由均匀逐渐变得局域化,引发多重剪切带的萌生和扩展,划痕宽度显著增大,并在划痕尾端形成磨屑堆积;随着法向载荷由1 mN提高到7 mN,非晶合金压痕处的塑性变形量逐渐累积,弹性模量和硬度下降,表现出应变软化现象,这与变形过程中剪切带自由体积增多有关。
    • 陈佳欣; 李春燕; 侯少杰; 张强; 李晓诚; 寇生中
    • 摘要: 非晶合金又称“金属玻璃”,是由于超快速冷却凝固导致无法有序排列结晶,从而得到的一种长程无序结构。这种非晶合金与存在晶界和位错的普通合金相比,具有更加优异的力学及物化性能。由于粉末状或条状非晶合金在尺寸和性能等方面的限制,因而大尺寸、优异力学性能及软磁性能卓越的块体非晶合金的制备受到了大量关注与探究。放电等离子烧结技术以温度低、效率高、时间短及冷却速率快等优点,被认为是一种具有广阔发展前景的制备方法。对Fe基、Zr基、Al基及Ti基本身的特点,以及通过放电等离子烧结技术制备不同体系块体非晶合金的物理及化学性能的研究进行了较为全面的综述。概述了放电等离子烧结技术的原理及在制备块体非晶合金方面的优势;分析了放电等离子烧结技术和制备的块体非晶合金材料存在的问题,以及采用该技术制备块体非晶合金的发展前景。重点介绍了在采用该制备不同体系的块体非晶合金时,如何通过改变放电等离子烧结参数,或通过再加工、本身粉末添加元素等方法获得大尺寸、优异性能的块体非晶合金
    • 王艳; 周向葵; 吴深
    • 摘要: 通过分析块体非晶合金摩擦磨损过程的特点,总结了影响其摩擦磨损性能的主要因素,并从非晶合金与相应晶态合金对比、热处理和摩擦诱导晶化结构3个方面对其摩擦磨损性能研究现状进行阐述,指出:影响块体非晶合金摩擦磨损性能的主要因素为传热因素、配副材料和摩擦条件,且不同的影响因素之间相互关联、相互影响,即配副材料的热性能决定摩擦热导出速率,通过影响摩擦表面温度对摩擦过程产生影响,当摩擦条件改变时,非晶合金材料的稳定性发生变化,磨损量急剧增加或减小,从而影响其摩擦磨损性能.由于非晶合金的结构特点和摩擦磨损过程的特性,关于非晶合金与相应晶态材料摩擦磨损性能的对比研究,以及热处理和摩擦诱导晶化结构对块体非晶合金材料摩擦性能的影响研究中均存在矛盾性结论,需进一步研究非晶合金的结构与其摩擦磨损行为之间的关系,探究非晶合金磨损机制与转变规律,进而探索提升非晶合金耐磨性能的方法与途径.
    • 王艳; 周向葵; 吴深
    • 摘要: 通过分析块体非晶合金摩擦磨损过程的特点,总结了影响其摩擦磨损性能的主要因素,并从非晶合金与相应晶态合金对比、热处理和摩擦诱导晶化结构3个方面对其摩擦磨损性能研究现状进行阐述,指出:影响块体非晶合金摩擦磨损性能的主要因素为传热因素、配副材料和摩擦条件,且不同的影响因素之间相互关联、相互影响,即配副材料的热性能决定摩擦热导出速率,通过影响摩擦表面温度对摩擦过程产生影响,当摩擦条件改变时,非晶合金材料的稳定性发生变化,磨损量急剧增加或减小,从而影响其摩擦磨损性能.由于非晶合金的结构特点和摩擦磨损过程的特性,关于非晶合金与相应晶态材料摩擦磨损性能的对比研究,以及热处理和摩擦诱导晶化结构对块体非晶合金材料摩擦性能的影响研究中均存在矛盾性结论,需进一步研究非晶合金的结构与其摩擦磨损行为之间的关系,探究非晶合金磨损机制与转变规律,进而探索提升非晶合金耐磨性能的方法与途径.
    • 吕龙; 张启东; 蒋伟; 李小蕴; 祖方遒
    • 摘要: 以Zr48Cu36Al8Ag8为研究对象,结合差示扫描量热法和X射线衍射法,以电阻法探索高流变成型法对块体非晶合金β弛豫及热稳定性的作用规律.升温速率为10 K/min的验证试验表明,电阻法所标定样品的β弛豫开始温度Tβ、一次晶化开始温度Tx-onset及其区间等特征参数均与差示扫描量热法结果相吻合.这证明电阻法探索β弛豫及热稳定性的有效性.为进一步获得更细致信息,以升温速率1 K/min约化电阻率曲线揭示,高流变成型法成型后样品的Tβ大幅提前,且β弛豫所致电阻率变化值Δρ rel显著增加,表明高流变成型法显著增强该块体非晶合金β弛豫强度;成型后Tx-onset滞后且晶化温度区间ΔTx变宽,反映高流变成型法提高了该块体非晶合金的热稳定性.这一结论得到不同温度水淬样品X射线衍射结果证实,尽管成型前后的最终晶化相并未改变.%This work, combining with differential scanning calorimetry (DSC) and X-ray diffraction (XRD) methods, adopts the resistivity method to investigate the effects of HRRF on β relaxation and thermal stability of Zr48Cu36Al8Ag8 bulk metallic glass (BMG). The verification tests at a heating rate of 10 K/min show that, the characteristic parameters calibrated by the resistivity method, like β relaxation onset temperature Tβ, the first crystallization onset temperature Tx-onsetand its related interval, are consistent with DSC results perfectly, which manifests the effectiveness of the resistivity method on exploring β relaxation and thermal stability of Zr48Cu36Al8Ag8BMG. For more detailed information, the normalized resistivity curves at a heating rate of 1 K/min are obtained, which uncover a sharp Tβadvance and a significant increase in the resistivity change value Δρrelcontributed by the β relaxation of the formed BMG, indicating an intensified β relaxation of the formed BMG; furthermore, obviously lagging Tx-onsetand broadening ΔTxof the formed BMG evince significantly enhance thermal stability of the formed BMG, which gets further confirmation by XRD results of the water-quenched samples at different temperatures, despite the identical final crystallization phases of both as-cast and formed BMG samples.
    • 赵燕春; 许丛郁; 袁小鹏; 何旌; 寇生中; 李春燕; 袁子洲
    • 摘要: How to enhance room-temperature plasticity and toughness have been obstacles for advanced functional structural applications of bulk amorphous alloy.Understanding of the plastic deformation mechanism under loading at room temperature is a precondition for plasticity and toughness improvements.Formation and propagation of highly localized shear bands produce the plastic deformation of bulk amorphous alloy.And to increase the room temperature plasticity depends on how to make the uniform distribu-tion of the shear band.A thorough and detailed research in the field have been done and obtained different methods for plasticity and toughness improvements,such as shot peening,high Poisson's ratio of amorphous alloy system design,as cast phase-separated a-morphous alloy system with microstructural fluctuation,introduction of crystalline phase,and so on.In this paper,the research hot spot,the plastic toughness criterion,the method of finding the formation and expansion of the block amorphous alloys are reviewed from six aspects,that is,the second phase toughened amorphous matrix composites,Poisson's ratio criterion,size effect,surface modifications,preforming multiple shear bands improves preform plasticity,and thermal cycling induced rej uvenation,etc.The paper also points out that to obtain excellent tensile ductility and fracture toughness,is the research object and important develop-ment direction of different amorphous alloy systems,and promotes the application and industrialization of bulk amorphous alloy as a new type of functional structural material.%提高室温塑性和断裂韧性是块体非晶合金作为先进结构材料应用亟待解决的关键科学问题,理解应力加载时的室温塑性变形机制是提高其韧塑性的前提.块体非晶合金通过高度局域化的剪切带形成和扩展而产生塑性变形,提高其室温塑性取决于剪切带的均匀化分布程度.研究者们在该领域做了深入细致的研究工作,如喷丸、设计高泊松比的非晶、设计具有微观起伏结构的铸态相分离非晶以及引入晶相增韧等,使块体非晶合金的韧塑性得到有效改善.从第二相韧塑化非晶基复合材料、泊松比判据、尺寸效应、非晶表面涂层增韧、通过预变形预制多重剪切带改善塑性、冷热循环处理抗非晶合金老化等方面,综述了块体非晶合金韧塑化的研究热点,韧塑性判据,控制剪切带形成、扩展和分布的方法,指出获得良好拉伸塑性和断裂韧性仍是不同体系非晶合金的研究目标和重要发展方向,推动着块体非晶合金作为新型功能结构材料的应用和产业化.
    • 李春燕; 尹金锋; 王铮; 寇生中; 赵燕春
    • 摘要: Focusing on (Zr0.6336 Cu0.1452 Ni0.1012 Al0.12) 100 x Erx (x =0,0.5,1,1.5,2,2.5,3,atom fraction) bulk amorphous alloys,the effect of Er on the structure,mechanical properties,thermal stability and amorphous forming ability of amorphous alloys was studied by changing the content of trace element of Er.The results show that all the samples are completely amorphous alloys after the addition of Er element.With the increase of the content of Er,the elastic modulus of each sample increases firstly and then decreases,and the compressive plastic strain is stepped up,and the plastic strain of samples at x=0,x=0.5 and x=1 is fluctuating in the range of 4 %00;the plastic strain of samples at x=1.5,x=2,x=2.5 in the range of 11 %;the plastic strain of samples at x=3 is the highest,its value is 23.19%,the elastic modulus is 37.76GPa,the yield strength is 1604MPa,the compressive strength is 2068MPa,the fracture strength is 2060MPa.With the increase of Er content,the thermal stability of Zr based amorphous alloys and amorphous formation ability decrease firstly and then increase.%以(Zr0.6336 Cu0.1452 Ni0.1012 Al0.12) 100xErx (x=0,0.5,1,1.5,2,2.5,3,原子分数,下同)系块体非晶合金为研究对象,通过改变微量元素Er的含量来研究Er对非晶合金的结构、力学性能、热稳定性及非晶形成能力的影响.结果表明:添加Er元素所制备出的试样都是完全非晶结构的合金.随着Er含量的增加,各试样的弹性模量呈现出先增大后减小,压缩塑性应变呈台阶式上升,x=0,x=0.5,x=1试样的塑性应变在4%的范围内波动;x=1.5,x=2,x=2.5试样的塑性应变在11%的范围内波动;x=3试样的塑性应变最高,其值为23.19%,弹性模量为37.76GPa,屈服强度为1604MPa,抗压强度为2068MPa,断裂强度为2060MPa;随着Er含量的增加,锆基非晶合金的热稳定性和非晶形成能力均先减小后增大.
    • 李辉; 郑志镇; 吴晓; 李建军
    • 摘要: 将超声振动场引入到非晶过冷液流变成形中,设计了一套超声振动辅助金属热塑成形实验装置,进行了Zr55 Cu30 A11o Ni5块体非晶合金高温单轴压缩实验,研究了非晶合金在超声振动辅助下过冷液相区内的流变行为.实验结果表明,超声振动能减小非晶合金的流动应力与黏度,且输入功率越大,越有利于非晶合金的变形.分析了超声振动场提高非晶合金流变成形能力的机理:振动导致变形过程中内应力和摩擦力周期性消失,宏观上则表现为变形抗力的降低和摩擦条件的改善.%Ultrasonic vibration field was introduced into rheological forming of amorphous supercooled fluid,and an ultrasonic vibration-assisted metal forming experimental apparatus was designed.Experiments of high temperature uniaxial compression of Zr55 Cu30Al10Ni5 bulk metallic glasses were carried out,and the rheological behaviors of the Zr55Cu30Al10Ni5 in supercooled liquid state with ultrasonic vibrations were studied.The experimental results show that ultrasonic vibrations may reduce flow stress and viscosity of the bulk metallic glasses,and the greater the input power,the more conducive to the deformation of amorphous alloys.The mechanism of the improving of the rheological forming ability by ultrasonic vibrating fields is analyzed,and it is considered that the vibrations cause the periodic disappearance of the internal stress and friction in deformation,thus the macro performance is the reduction of deformation resistance and the improvement of friction conditions.
    • 倪晓俊; 薄希辉; 李准; 刘迎春; 李德仁; 卢志超
    • 摘要: 采用铜模吸铸法制备了直径2 mm的Fe64.7Co6Cr2.3Mo2.5B5.5C7Si3.3P8.7块体非晶合金,其玻璃转变温度Tg、超冷液相区间ΔTx(=Tx1-Tg)、约化玻璃转变温度Trg(=Tg/Tl)和玻璃形成能力参数γ(=Tx1/(Tg+Tl))分别为754,25 K、0.595和0.3855.利用真空热处理炉分别在733 K(T x1)温度对块体非晶合金进行了等温退火,采用自制的电容法磁致伸缩测量装置测试了不同退火状态下的磁致伸缩特性,显示该非晶合金淬态下饱和磁致伸缩系数λs为9×10-6,随着退火温度的升高λs出现了先增后减的变化,磁致伸缩曲线形状也发生先变窄后变宽的变化.在733 K退火样品的软磁性能最好,饱和磁致伸缩系数λs(=12×10-6)最高.%Bulk amorphous Alloy Fe64.7Co6Cr2.3Mo2.5B5.5C7Si3.3P8.7 with diameter of 2 mm has been prepared by copper mold upper suction casting method.The glass transition temperature Tg ,supercooled liquid rigeon ΔTx (=Tx1-Tg),reduced glass transition temperature Trg(=Tg/Tl) and glass-forming ability parameter (=Tx1/(Tg+Tl)) were measured to be 754,25 K,0.595 and 0.3855,respectively.The cast amorphous alloys were iso-thermal annealed at 733 K (Tx1 ) under vacuum condition and their magnetostriction properties were studied by self-made magnetostrictive measuring device of capaci-tance method.The results showed that the saturation magnetostriction λs of the cast amorphous alloy was the order of 9×10-6 .With the increase of annealing temperature from 733 to 803 K,the change of λs increased first and then decreased,and the shape of the magnetostrictive curve becomes narrower first and the n wider.Soft magnetic properties and λs(=12×10-6 )of the samples became optimum under annealing of 733 K.
    • 吴渊; 宋温丽; 周捷; 曹迪; 王辉; 刘雄军; 吕昭平
    • 摘要: Bulk metallic glass has aroused intensive interest due to its unique atomic structure and properties, while its struc-tural application is restricted by the shortcomings of its mechanical properties-room temperature brittleness and strain softening. To make up for these shortcomings, various approaches have been proposed, including tailoring intrinsic parameters such as elastic modulus and structural heterogeneity, and changing stress state or defect concentration. Bulk metallic glass composites with ex-situ added or in-situ formed crystallites have been fabricated, series of bulk metallic glasses and their composites with good mechanical properties have been designed, especially TRIP (transformation-induced plasticity)-reinforced bulk metallic glass composites with large tensile ductility and work-hardening. In this paper, we review the ductilization of bulk metallic glass and its composites, as well as the related mechanism. Particu-larly, fabrication, properties, structure control and the ductilization mechanism of TRIP-reinforced bulk metallic glass composite are introduced in detail. A perspective of the challenges of ductilization of bulk metallic glassy materials is also mentioned briefly.%块体非晶合金因其独特的原子结构而具有许多优异的力学性能,成为近年来材料领域的研究热点之一,但是由于其在变形过程中的室温脆性和应变软化等关键问题一直制约着其实际工程应用.为解决此问题,块体非晶合金领域的研究者们提出了多种方案,包括通过在非晶合金中调控其内禀特性如弹性常数、结构不均匀性,通过外加手段改变其应力及缺陷状态,通过外加和内生的方法在非晶基体中引入晶态增强相等方式,获得了一系列力学性能优异的块体非晶合金及其复合材料.特别是利用"相变诱导塑性"(transformation-induced plasticity,TRIP)概念研制出的块体非晶合金复合材料,同时具有大的拉伸塑性和加工硬化能力.本文围绕块体非晶合金的韧塑化这个关键科学问题,对单相非晶及非晶复合材料的韧塑化方案及机理进行了综述,着重介绍了TRIP韧塑化块体非晶合金复合材料的制备、性能、组织调控及韧塑化机理等,并对此领域的未来发展进行了展望.
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