Unique energy-storage behavior related to structural heterogeneity in high-entropy metallic glass

Research progress in Zr-Ti containing high-entropymatellic glasses

“…Gu等人 [60] Wang等人 [63] [68] 研 究 了 [69] 研究了Ti 20 Zr 20 Hf 20 Be 20 Cu 20-x Ni x (x=0，10，20)高熵非晶合金的纳米划痕行为，并与 Zhang等人 [72] of the specimen oxidized at 753 K for 120 min (color from blue to red indicating elemental concentration from low to high) [72] 热塑性成形的微型蝙蝠 SEM图 [73] [73] 为了探讨 Ti 16.7 Zr degree. Zr-Ti containing HE-BMGs have higher activation energies than Vit-1, which means better thermodynamic stabilities.…”

“…Bizhanova等人 [36] 图 4 高熵非晶合金室温塑性改善的典型案例。(a) (TiZrHfCuBe) 1-x Sn x (x = 0, 1 at%, 2 at%, 3 at%)的纳米 压痕载荷-位移曲线 [57] ; (b) Ti 20 Zr 20 Hf 20 Be 20 Cu 20 无镀层样品和有镀层样品的压缩工程应力-应变曲线，插 图是相应选定区域的放大图 [58] ; (c) 不同次数深冷循环处理后，Ti 20 Zr 20 Hf 20 Be 20 Cu 20 高熵非晶合金的压 缩工程应力-应变曲线 [59] ; (d) 铸态和冷热循环处理后的Ti 20 Zr 20 Hf 20 Be 20 Cu 7.5 Ni 12.5 高熵非晶合金 [60] Figure 4 Changes in mechanical properties of HE-BMGs with various plastic improvement methods. (a)…”

“…(b) Compression engineering stress-strain curve for uncoated and coated Ti 20 Zr 20 Hf 20 Be 20 Cu 20 samples [58] ; (c) Engineering stress-strain curves of the Ti 20 Zr 20 Hf 20 Be 20 Cu 20 after deep cryogenic treatment [59] ; (d) Engineering stress-strain curves of the as-cast and cryothermal cycling treated Ti 20 Zr 20 Hf 20 Be 20 Cu 7.5 Ni 12.5 HE-BMGs [60] 3.2.2 表面镀层改善塑性 表面镀层可以降低应力集中，使剪切带发生的区域更加均匀分布，有利于改善高熵非晶合金的 A c c e p t e d https://engine.scichina.com/doi/10.1360/TB-2021-1124 塑性。Cao等人 [58]…”

Relaxation behavior of high-entropy bulk metallic glass: Influences of physical aging and cyclic loading

“…探究金属玻璃微观结构与物理/力学 性能之间的关联是该领域研究重点之一. 前期研究通 过实验手段、数值模拟和理论分析已证实微观结构非 均匀性是金属玻璃的内在特征, 这为深入研究金属玻 璃的微观变形机制、微观结构非均匀性与其物理、力 学和化学性能之间的关联提供了有力的依据 [4,14,15] . 属玻璃保留了液体绝大部分的结构信息, 所以弛豫行 为是非晶态材料特别是金属玻璃的内在本质特征之 一 [16,18] .…”

Atomistic Modelling of Thermal-Cycling Rejuvenation in Metallic Glasses

“…Since the original report 9 , there have been many experimental studies of CTC applied to MGs. These have shown effects on the enthalpy [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] , on density 11-17, 21, 26 , on mechanical properties [10][11][12][13][14][15][16][17][18][19][20][21][22][24][25][26][27][28][29][30][31] and on structure 19, 20, 24-27, 30, 32-34 . The most dramatic beneficial effects of rejuvenation are on the fracture behaviour: fracture toughness and impact toughness roughly doubled 18,28 , and toughness (critical strain-energy release rate) increased by more than a factor of five 18 .…”