Chen Ken, Huang Bo, Wang Qing, Wang Gang. STRUCTURE AND TOUGHNESS MODULATION OF A Zr52.5Cu17.9Ni14.6Al10Ti5 METALLIC GLASS BY SURFACE MECHANICAL ATTRITION TREATMENT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(2): 400-407. DOI: 10.6052/0459-1879-20-030
Citation:
Chen Ken, Huang Bo, Wang Qing, Wang Gang. STRUCTURE AND TOUGHNESS MODULATION OF A Zr52.5Cu17.9Ni14.6Al10Ti5 METALLIC GLASS BY SURFACE MECHANICAL ATTRITION TREATMENT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(2): 400-407. DOI: 10.6052/0459-1879-20-030
Chen Ken, Huang Bo, Wang Qing, Wang Gang. STRUCTURE AND TOUGHNESS MODULATION OF A Zr52.5Cu17.9Ni14.6Al10Ti5 METALLIC GLASS BY SURFACE MECHANICAL ATTRITION TREATMENT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(2): 400-407. DOI: 10.6052/0459-1879-20-030
Citation:
Chen Ken, Huang Bo, Wang Qing, Wang Gang. STRUCTURE AND TOUGHNESS MODULATION OF A Zr52.5Cu17.9Ni14.6Al10Ti5 METALLIC GLASS BY SURFACE MECHANICAL ATTRITION TREATMENT[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(2): 400-407. DOI: 10.6052/0459-1879-20-030
As a new type of structural material, the toughness of metallic glasses (MGs) needs to be further improved. The methods of improving the toughness of MGs include introducing dendrite phase, tuning their compositions to change the Poisson's ratios in order to affect the formation and spread of shear bands and cracks, {etc}. In this paper, we use the method of surface mechanical treatment to alter the microstructure and toughness of MGs. A Zr52.5Cu17.9Ni14.6Al10Ti5 (at. %) MG (Vit105) plate was prepared by arc melting in vacuum and centrifugal casting system for thin plates in the metastable state. Surface mechanical attrition treatment (SMAT) is introduced to form nanoscale local crystal-like ordered structure in Vit105. Through differential scanning calorimetry and nano-indentation experiments, we find that the relaxation enthalpy near the surface of the SMAT-treated Vit105 plate is reduced, and its microstructure is more homogenous and stable The analysis by Vickers hardness tester shows that the hardness of the regions near the surface is increased and the hardness values distribute more narrowly after the SMAT treatment. Three-point bending fracture experiment reveals that notch toughness of the plate is also improved by SMAT. By SMAT treatment, the notch toughness increases from 70.7 ± 4.7 MPa·m1/2 to 112.8 ± 3.7 MPa·m1/2. Meanwhile, the density of shear bands becomes larger near the fracture surface as compared to the untreated sample. The enhancement of the toughness of Vit105 plate treated by SMAT originates from the promotion of the formation of shear bands. Our studies show that surface mechanical treatment leads to the formation of local crystal-like ordered structure in MGs with the enhancement of structural homogeneity. The hardness and toughness of MGs are improved, being associated with the formation of profusive shear bands. As a novel approach of improving the properties of materials, surface mechanical treatment has a broad application prospect in future.
Klement W, Willens R, Duwez P . Non-crystalline structure in solidified gold-silicon alloys. Nature, 1960,187(4740):869-870
[2]
Chen H, Turnbull D . Formation, stability and structure of palladium-silicon based alloy glasses. Acta Metallurgica, 1969,17(8):1021-1031
[3]
Chen H . Alloying effect on the viscous flow in metallic glasses. Journal of Non-Crystalline Solids, 1978,29(2):223-229
[4]
Inoue A, Kita K, Zhang T , et al. An amorphous LaAlNi alloy prepared by water quenching. Materials transactions, JIM, 1989,30(9):722-725
[5]
Inoue A, Zhang T, Masumoto T . Zr-Al-Ni amorphous alloys with high glass transition temperature and significant supercooled liquid region. Materials Transactions, JIM, 1990,31(3):177-183
[6]
Peker A, Johnson WL . A highly processable metallic glass: ZrTiCuNiBe. Applied Physics Letters, 1993,63(17):2342-2344
[7]
Wang WH, Dong C, Shek CH . Bulk metallic glasses. Materials Science and Engineering: R, 2004,44:45
[8]
Hofmann DC, Suh JY, Wiest A , et al. Designing metallic glass matrix composites with high toughness and tensile ductility. Nature, 2008,451(7182):1085-1089
[9]
Demetriou MD, Launey ME, Garrett G , et al. A damage-tolerant glass. Nature Materials, 2011,10(2):123
[10]
Ritchie RO . The conflicts between strength and toughness. Nature Materials, 2011,10(11):817-822
[11]
Wang G, Chan KC, Xia L , et al. Self-organized intermittent plastic flow in bulk metallic glasses. Acta Materialia, 2009,57(20):6146-6155
[12]
Zhu F, Hirata A, Liu P , et al. Correlation between local structure order and spatial heterogeneity in a metallic glass. Physical Review Letters, 2017,119(21):215501
[13]
Hwang J, Melgarejo Z, Kalay Y , et al. Nanoscale structure and structural relaxation in ZrCuAl bulk metallic glass. Physical Review Letters, 2012,108(19):195505
[14]
Zhang P, Maldonis JJ, Besser MF , et al. Medium-range structure and glass forming ability in Zr-Cu-Al bulk metallic glasses. Acta Materialia, 2016,109:103-114
[15]
Leocmach M, Tanaka H . Roles of icosahedral and crystal-like order in the hard spheres glass transition. Nature Communications, 2012,3:974
[16]
Wang Q, Liu CT, Yang Y , et al. Atomic-scale structural evolution and stability of supercooled liquid of a Zr-based bulk metallic glass. Physical Review Letters, 2011,106(21):215505.
[17]
Wang Q, Liu CT, Yang Y , et al. The atomic-scale mechanism for the enhanced glass-forming-ability of a Cu-Zr based bulk metallic glass with minor element additions. Scientific Reports, 2014,4:4648
[18]
Wang Q, Yang Y, Jiang H , et al. Superior tensile ductility in bulk metallic glass with gradient amorphous structure. Scientific Reports, 2014, 4: 4757
[19]
Wang Q, Liu CT, Yang Y , et al. Atomic-scale structural evolution and stability of supercooled liquid of a Zr-based bulk metallic glass. Physical Review Letters, 2011,106(21):215505
[19]
Van den Beukel A, Sietsma J . The glass transition as a free volume related kinetic phenomenon. Acta Metallurgica Et Materialia, 1990,38(3):383-389
[20]
Bhowmick R, Raghavan R, Chattopadhyay K , et al. Plastic flow softening in a bulk metallic glass. Acta Materialia, 2006,54(16):4221-4228
[21]
Sun Y, Concustell A, Greer AL . Thermomechanical processing of metallic glasses: Extending the range of the glassy state. Nature Reviews Materials, 2016,1(9):16039
[22]
Zhu ZG, Wen P, Wang DP , et al. Characterization of flow units in metallic glass through structural relaxations. Journal of Applied Physics, 2013,114(8):083512
[23]
Jiao W, Wen P, Bai HY , et al. Transiently suppressed relaxations in metallic glass. Applied Physics Letters, 2013,103(16):161902
[24]
Zhang Y, Wang WH, Greer AL . Making metallic glasses plastic by control of residual stress. Nature Materials, 2006,5(11):857-60
[25]
Gilbert CJ, Ritchie RO, Johnson WL . Fracture toughness and fatigue-crack propagation in a Zr-Ti-Ni-Cu-Be bulk metallic glass. Applied Physics Letters, 1997,71(4):476-478
[26]
Han Q, Qu Z, Ye ZY , et al. Study on fracture toughness of mode I of shale based on micro-mechanical test. Chinese Journal of Theoretical and Applied Mechanics, 2019,51(4):1245-1254
[27]
Zhang ZJ, Cai LX, Chen H , et al. Spherical indentation method to determine stress-strain relations and tensile strength of metallic materials. Chinese Journal of Theoretical and Applied Mechanics, 2019,51(1):159-169
[28]
Lowhaphandu P, Lewandowski JJ . Fracture toughness and notched toughness of bulk amorphous alloy: Zr-Ti-Ni-Cu-Be. Scripta Materialia, 1998,38(12):1811-1817
[29]
Demetriou MD, Kaltenboeck G, Suh JY , et al. Glassy steel optimized for glass-forming ability and toughness. Applied Physics Letters, 2009,95(4):041907
[30]
Garrett GR, Demetriou MD, Chen J , et al. Effect of microalloying on the toughness of metallic glasses. Applied Physics Letters, 2012,101(24):241913
[31]
Astm E1820-18, Standard Test Method for Measurement of Fracture Toughness, Astm International, West Conshohocken, PA, 2018, ww.astm.org .
[32]
Gludovatz B, Granata D, Thurston KV , et al. On the understanding of the effects of sample size on the variability in fracture toughness of bulk metallic glasses. Acta Materialia, 2017,126:494-506
[33]
Fujita K, Okamoto A, Nishiyama N , et al. Effects of loading rates, notch root radius and specimen thickness on fracture toughness in bulk metallic glasses. Journal of Alloys and Compounds, 2007,434:22-27
[34]
Hassan HA, Lewandowski JJ . Effects of mixed mode loading on the fracture toughness of bulk metallic glass/W composites. Materials Science and Engineering: A, 2013,586:413-417
[35]
Chen W, Liu Z, Ketkaew J , et al. Flaw tolerance of metallic glasses. Acta Materialia, 2016,107:220-228
[36]
Greer AL, Cheng YQ, Ma E . Shear bands in metallic glasses. Materials Science and Engineering: R, 2013,74(4):71-132
[37]
Ye XY, Liu CL, Cai LC , et al. A model of neutron irradiation embrittlement for metals. Chinese Journal of Theoretical and Applied Mechanics, 2019,51(5):1538-1544
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