Formation of Cu–Zr–Al bulk metallic glass composites with improved tensile properties

Wu, Yuan; Wang, H.; Wu, Hong‐Hui; Zhang, Z.Y.; Hui, Xidong; Chen, G.L.; Ma, Dong; Wang, X.L.; Liu, Xiongjun

doi:10.1016/j.actamat.2011.01.029

Cited by 299 publications

(110 citation statements)

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“…However, the super-cooled austenitic B2-CuZr phase is metastable which only exists above 988 K [16,17], and it has already been found that formation of the B2-CuZr phase is extremely sensitive to the composition and fabrication process [15]. On the other hand, it was also suggested that the volume fraction and distribution of the B2-CuZr phase both could affect the mechanical properties of the TRIP-BMG composites [13,15].…”

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confidence: 99%

“…Recently, the concept of transformationinduced plasticity (TRIP) was applied into the (Cu 0.5 Zr 0.5 ) 100x Al x (x = 1, 2……10 at%) BMG system and both tensile ductility and work-hardening capability were obtained [11][12][13][14][15]. The martensitic transformation of the B2-CuZr phase was found to be responsible for the enhanced tensile properties [14,15].…”

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confidence: 99%

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Relationship between composite structures and compressive properties in CuZr-based bulk metallic glass system

Song

Zhang

et al. 2011

Chin. Sci. Bull.

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Bulk metallic glass (BMG) composites with the austenite B2 phase as reinforcement macroscopically showed strain hardening behavior due to the plasticity induced by martensitic transformation during deformation. Relationship between characteristics of the B2-CuZr reinforcing phase and uniaxial compressive properties of CuZr-based BMG composites was studied. Mechanical properties of these BMG composites were found to depend on not only the reinforced phases but also the amorphous matrix, and the yield and fracture strength can be roughly estimated by the rule of mixture principle. Distribution of the reinforced B2-CuZr phase has an important impact on the compressive plasticity even for the composites with a similar volume fraction of the crystalline phase.

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confidence: 99%

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confidence: 99%

Relationship between composite structures and compressive properties in CuZr-based bulk metallic glass system

Song

Zhang

et al. 2011

Chin. Sci. Bull.

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“…Cu-based bulk metallic glasses (BMGs) have been extensively investigated due to their interestingly properties including work hardening [1], martensitic transformation [2][3][4][5], magnetism [6], catalytic activity [7,8], cryogenic temperature plasticity [9] and room-temperature plasticity [10][11][12][13][14], which enable their applications as structural and functional materials.…”

Section: Introductionmentioning

confidence: 99%

Phase formation, glass forming ability, mechanical and thermal properties of Cu50Zr50−x Al x (0⩽x⩽11.0) glass forming alloys

Cai

Liu

et al. 2015

Sci. China Mater.

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Phase formation, glass forming ability, mechanical and thermal properties of Cu50Zr50−xAlx (0x 11.0) glass forming alloys were systematically investigated. The results show that Cu50Zr47Al3 alloy has the best glass forming ability (GFA), lowest fragility index (m) and highest fracture strength. There are B2 CuZr and B19' CuZr phases for Cu50Zr50−xAlx (0x5.0) alloys. B2 CuZr phase disappears and two new phases (Cu10Zr7 and CuZr2) appear when 5.05.0). Cu50Zr50−xAlx (0x4.0) alloys are off-eutectic compositions while near-eutectic compositions for Cu50Zr50−xAlx (5.0x11.0) alloys. The Eg, Ex, and Ep decrease with increasing sensitive factor (β) for the studied Cu-based alloys characterized in the room-temperature brittleness. The dependence of the phase formation and GFA on the Al content is discussed. INTRODUCTIONCu-based bulk metallic glasses (BMGs) have been extensively investigated due to their interestingly properties including work hardening [1], martensitic transformation [2-5], magnetism [6], catalytic activity [7,8], cryogenic temperature plasticity [9] and room-temperature plasticity [10][11][12][13][14], which enable their applications as structural and functional materials.Cu-Zr binary alloy system is characterized by good glass forming ability (GFA) and wide composition region for the formation of glass alloys [15] Element minor addition/substitution is a well-known method for improving the GFA and other properties of glass forming alloys [6,[12][13][14]19,20]. For example, Mattern et al. [6] found that a ferromagnetic Gd-enriched nanocluster could form in Cu 50 Zr 50−x Gd x (x=5) metallic glasses due to the phase separation by Gd minor addition. Xi et al. [20] found that Gd minor addition improved the combination of the GFA and the room-temperature plasticity of Cu 46 Zr 47 Al 7 BMG. Ma et al. [12] investigated the effect of substituting Al by Ti on the GFA and the mechanical properties of brittle Cu 46 Zr 46 Al 8 BMG and found that the Ti addition significantly increased the plasticity although the characteristic temperatures including the glass transition temperature (T g ), onset crystallisation temperature (T x ) and supercooled liquid region (ΔT x ) decreased with increasing Ti content. Kuo et al. [13] investigated the effect of V on the phase formation and plasticity in Cu 47.5 Zr 47.5 Al 5 glassy alloy and found that V minor addition improved the plasticity by doubling the fracture strain to 9.4% in (Cu 47.5 Zr 47.5 Al 5 ) 99 V 1 due to the formation of B2-CuZr precipitates. Recently, Cai et al. [14] found that the substitution of Ti by Ni significantly influences the GFA, mechanical, electrical and thermal properties of Cu 50 Zr 40 Ti 10...

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“…However, the presence of crystalline phases tends to decrease the global strength of composites as compared to pure matrix glasses. Therefore, sustained efforts have been made to optimize the strength and plasticity of composites by modifying the sizes, spacing, shape, distribution and volume fraction of crystalline phases [13,[24][25][26][27][28][29][30][31]. Among these, the volume fraction is a structural parameter to effectively tune the composite's properties.…”

Section: Introductionmentioning

confidence: 99%

Tuning plasticity of in-situ dendrite metallic glass composites via the dendrite-volume-fraction-dependent shear banding

Liu

Chen

Jiang

et al. 2017

Materials Science and Engineering: A

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A B S T R A C TThis work performs a systematic investigation of identifying how the volume fraction of the in-situ dendrites affects the plasticity of metallic glass composites. The quasi-static uniaxial compressions show that the global plastic strain does not follows a linear rule-of-mixture with the dendrite volume faction, instead, a slow-fastslow enhancement behaviour is observed with increasing dendrite volume fraction. It is demonstrated that the nucleation and propagation of shear bands in these composites are dependent on the dendrite volume fraction. When the dendrite volume fraction exceeds a critical value, multiple shear bands emerge in a spherical plastic zone around a dendrite. It is further proposed that the percolation of these spherical plastic zones contributes to the fast increase in the plastic strain of the glass composites. Our findings offer important implications for the microstructural optimization of the metallic glass composites with desirable mechanical properties.

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Formation of Cu–Zr–Al bulk metallic glass composites with improved tensile properties

Cited by 299 publications

References 47 publications

Relationship between composite structures and compressive properties in CuZr-based bulk metallic glass system

Relationship between composite structures and compressive properties in CuZr-based bulk metallic glass system

Phase formation, glass forming ability, mechanical and thermal properties of Cu50Zr50−x Al x (0⩽x⩽11.0) glass forming alloys

Tuning plasticity of in-situ dendrite metallic glass composites via the dendrite-volume-fraction-dependent shear banding

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