scholarly journals Deformation mechanisms of Mg-Ca-Zn alloys studied by means of micropillar compression tests

2021 ◽  
pp. 117151
Author(s):  
Jingya Wang ◽  
Yiwen Chen ◽  
Zhe Chen ◽  
Javier Llorca ◽  
Xiaoqin Zeng
Keyword(s):  
Deformation Mechanisms ◽  
Compression Tests ◽  
Micropillar Compression ◽  
Zn Alloys

Deformation mechanisms of basal slip, twinning and non-basal slips in Mg-Y alloy by micropillar compression

2021 ◽  
pp. 141408
Author(s):  
Na Li ◽  
Lingwei Yang ◽  
Chuanyun Wang ◽  
M.A. Monclús ◽  
Dongfeng Shi ◽  
...  
Keyword(s):  
Basal Slip ◽  
Deformation Mechanisms ◽  
Micropillar Compression

scholarly journals Room-temperature deformation of single crystals of ZrB2 and TiB2 with the hexagonal AlB2 structure investigated by micropillar compression

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhenghao Chen ◽  
Bhaskar Paul ◽  
Sanjib Majumdar ◽  
Norihiko L. Okamoto ◽  
Kyosuke Kishida ◽  
...  
Keyword(s):  
Single Crystals ◽  
Plastic Flow ◽  
Room Temperature ◽  
Resolve Shear Stress ◽  
Temperature Deformation ◽  
Slip Systems ◽  
Compression Tests ◽  
Plastic Deformation Behavior ◽  
Bulk Single Crystals ◽  
Micropillar Compression

AbstractThe plastic deformation behavior of single crystals of two transition-metal diborides, ZrB2 and TiB2 with the AlB2 structure has been investigated at room temperature as a function of crystal orientation and specimen size by micropillar compression tests. Although plastic flow is not observed at all for their bulk single crystals at room temperature, plastic flow is successfully observed at room temperature by the operation of slip on {1$${\bar{1}}$$ 1 ¯ 00}<11$${\bar{2}}$$ 2 ¯ 3> in ZrB2 and by the operation of slip on {1$${\bar{1}}$$ 1 ¯ 00}<0001> and {1$${\bar{1}}$$ 1 ¯ 00}<11$${\bar{2}}$$ 2 ¯ 0> in TiB2. Critical resolve shear stress values at room temperature are very high, exceeding 1 GPa for all observed slip systems; 3.01 GPa for {1$${\bar{1}}$$ 1 ¯ 00}<11$${\bar{2}}$$ 2 ¯ 3> slip in ZrB2 and 1.72 GPa and 5.17 GPa, respectively for {1$${\bar{1}}$$ 1 ¯ 00}<0001> and {1$${\bar{1}}$$ 1 ¯ 00}<11$${\bar{2}}$$ 2 ¯ 0> slip in TiB2. The identified operative slip systems and their CRSS values are discussed in comparison with those identified in the corresponding bulk single crystals at high temperatures and those inferred from micro-hardness anisotropy in the early studies.

Plasticity of decagonal Al73Ni10Co17 quasicrystals

2003 ◽  
Vol 805 ◽  
Author(s):  
Peter Schall ◽  
Michael Feuerbacher ◽  
Knut Urban
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Plastic Deformation ◽  
Deformation Mechanisms ◽  
Compression Tests ◽  
Compression Axis ◽  
Decagonal Quasicrystal ◽  
Transmission Electron ◽  
Axis Parallel ◽  
Means Of Transmission

ABSTRACTWe present a study of the deformation mechanism of decagonal Al73Ni10Co17 quasicrystals by means of transmission electron microscopy. We performed compression tests on single-quasicrystalline samples in three different orientations: with the compression axis parallel to, inclined by 45 ° and perpendicular to the tenfold axis of the decagonal quasicrystal. The deformed samples reveal characteristic orientation-dependent dislocation structures leading us to the conclusion that fundamentally different deformation mechanisms are involved in plastic deformation in the three deformation geometries. We explicitly identified the Burgers vectors of the dislocations as interatomic vectors in the structure of decagonal Al-Ni-Co.

Evaluation of Irradiation Effects on Fracture Strength of Silicon Carbide using Micropillar Compression Tests

2012 ◽  
Vol 53 (4) ◽  
pp. 687-697 ◽  
Author(s):  
C. Shin ◽  
H.-h. Jin ◽  
H. Sung ◽  
D.-J. Kim ◽  
Y. S. Choi ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Fracture Strength ◽  
Compression Tests ◽  
Irradiation Effects ◽  
Micropillar Compression

Critical assessment of CuZn39Pb2 processing maps

2020 ◽  
Vol 111 (5) ◽  
pp. 439-448
Author(s):  
Jing Yin ◽  
Shiqing Wu ◽  
Zhenlun Song ◽  
Cheng Xu ◽  
Qi Cui
Keyword(s):  
Continuous Casting ◽  
Process Parameters ◽  
Processing Map ◽  
Flow Behavior ◽  
Deformation Mechanisms ◽  
Instability Criterion ◽  
Strain Rates ◽  
Processing Maps ◽  
Compression Tests ◽  
Different Strains

Abstract Isothermal hot compression tests of the CuZn39Pb2 continuous casting bar were carried out at 650 - 750 °C and strain rates of 0.1 - 50 s-1. After the experimental data were obtained, processing maps were constructed and discussed on the basis of the Prasad, Murty and Malas instability criteria to critically evaluate the flow behavior of the CuZn39Pb2 continuous casting bar. The microstructure suggested that the processing map based on the Murty instability criterion was suitable for optimizing the process parameters of the CuZn39Pb2. The relationships between the characteristics of processing maps and the deformation mechanisms under different strains were analyzed on the basis of Murty instability criterion. Considering the theoretical analysis results and energy consumption economy, 690 °C ≤ T ≤ 720 °C with 1 s-1 ≤ έ ≤ 3 s-1 are the best process parameters for CuZn39Pb2 forging.

scholarly journals Using coupled micropillar compression and micro-Laue diffraction to investigate deformation mechanisms in a complex metallic alloy Al13Co4

2016 ◽  
Vol 108 (11) ◽  
pp. 111902 ◽  
Author(s):  
Ayan Bhowmik ◽  
Igor P. Dolbnya ◽  
T. Ben Britton ◽  
Nicholas G. Jones ◽  
Giorgio Sernicola ◽  
...  
Keyword(s):  
Metallic Alloy ◽  
Deformation Mechanisms ◽  
Laue Diffraction ◽  
Micropillar Compression
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