Plastic Deformation Behavior of Ni3X(X=Nb, Ti, Sn) Type HCP-Based Intermetallics with the Geometrically Close-Packed Structure

2002 ◽  
Vol 753 ◽  
Author(s):  
Koji Hagihara ◽  
Takayoshi Nakano ◽  
Yukichi Umakoshi
Keyword(s):  
Plastic Deformation ◽  
Basal Plane ◽  
Deformation Behavior ◽  
Plastic Behavior ◽  
Close Packed Structure ◽  
Plastic Deformation Behavior ◽  
Deformation Behaviors ◽  
Packed Structure ◽  
Characteristic Features ◽  
Similarity And Difference

ABSTBACTIn this paper, our recent results on the plastic deformation behaviors of Ni3X-type hcp-based GCP compounds, such as D0a-Ni3Nb, D019-Ni3Sn and D024-Ni3Ti, are summarized. The similarity and difference of their plastic behavior are discussed focusing on the correlation with the characteristic features of their crystal structures. The criterion for the occurrence of yield stress anomaly (YSA) by slip on the basal plane is also discussed.

Deformation Modes and Anomalous Strengthening of Ni3X -Type Intermetallic Compounds with the Geometrically Close-Packed Structure

2005 ◽  
Vol 502 ◽  
pp. 145-150 ◽  
Author(s):  
Yukichi Umakoshi ◽  
Koji Hagihara ◽  
Takayoshi Nakano
Keyword(s):  
Plastic Deformation ◽  
Crystal Structures ◽  
Intermetallic Compounds ◽  
Deformation Behavior ◽  
Deformation Characteristics ◽  
Close Packed Structure ◽  
Plastic Deformation Behavior ◽  
Packed Structure ◽  
Deformation Modes

Plastic deformation behavior including anomalous strengthening of Ni3X-type compounds with D019, D0a and D024 structure were examined and summarized, focusing on the correlation between deformation characteristics and features of their crystal structures.

scholarly journals Anisotropic Plastic Behavior of Additively Manufactured PH1 Steel

2021 ◽  
Author(s):  
Wenqi Liu ◽  
Zinan Li ◽  
Sven Bossuyt ◽  
Antti Forsström ◽  
Zaiqing Que ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Thermal History ◽  
Deformation Behavior ◽  
Uniaxial Tensile ◽  
Plastic Behavior ◽  
Geometrical Shape ◽  
Anisotropic Plasticity ◽  
Plastic Deformation Behavior ◽  
Anisotropic Plastic

Metals made by additive manufacturing (AM) have intensely augmented over the past decade for customizing complex structured products in the aerospace industry, automotive, and biomedical engineering. However, for AM fabricated steels, the correlation between the microstructure and mechanical properties is yet a challenging task with limited reports. To realize optimization and material design during the AM process, it is imperative to understand the influence of the microstructural features on the mechanical properties of AM fabricated steels. In the present study, three material blocks with 120×25×15 mm3 dimensions are produced from PH1 steel powder using powder bed fusion (PBF) technology to investigate the anisotropic plastic deformation behavior arising from the manufacturing process. Despite being identical in geometrical shape, the manufactured blocks are designed distinguishingly with various coordinate transformations, i.e. alternating the orientation of the block in the building direction (z) and the substrate plate (x, y). Uniaxial tensile tests are performed along the length direction of each specimen to characterize the anisotropic plastic deformation behavior. The distinctly anisotropic plasticity behavior in terms of strength and ductility are observed in the AM PH1 steel, which is explained by their varied microstructure affected by the thermal history of blocks. It could also be revealed that the thermal history in the AM blocks is influenced by the block geometry even though the same process parameters are employed.

scholarly journals Temperature dependence of elastic and plastic deformation behavior of a refractory high-entropy alloy

2020 ◽  
Vol 6 (37) ◽  
pp. eaaz4748 ◽  
Author(s):  
Chanho Lee ◽  
George Kim ◽  
Yi Chou ◽  
Brianna L. Musicó ◽  
Michael C. Gao ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Neutron Diffraction ◽  
Deformation Behavior ◽  
Elevated Temperatures ◽  
High Entropy ◽  
Plastic Deformation Behavior ◽  
Deformation Behaviors ◽  
In Situ Neutron Diffraction ◽  
Elastic And Plastic Deformation

Single-phase solid-solution refractory high-entropy alloys (HEAs) show remarkable mechanical properties, such as their high yield strength and substantial softening resistance at elevated temperatures. Hence, the in-depth study of the deformation behavior for body-centered cubic (BCC) refractory HEAs is a critical issue to explore the uncovered/unique deformation mechanisms. We have investigated the elastic and plastic deformation behaviors of a single BCC NbTaTiV refractory HEA at elevated temperatures using integrated experimental efforts and theoretical calculations. The in situ neutron diffraction results reveal a temperature-dependent elastic anisotropic deformation behavior. The single-crystal elastic moduli and macroscopic Young’s, shear, and bulk moduli were determined from the in situ neutron diffraction, showing great agreement with first-principles calculations, machine learning, and resonant ultrasound spectroscopy results. Furthermore, the edge dislocation–dominant plastic deformation behaviors, which are different from conventional BCC alloys, were quantitatively described by the Williamson-Hall plot profile modeling and high-angle annular dark-field scanning transmission electron microscopy.

Role of the Microstructure on the Deformation Behavior in Mg12ZnY with a Long-Period Stacking Ordered Structure

2008 ◽  
Vol 1128 ◽  
Author(s):  
Koji Hagihara ◽  
Naoyuki Yokotani ◽  
Akihito Kinoshita ◽  
Yuya Sugino ◽  
Hiroyuki Yamamoto ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Deformation Behavior ◽  
Hexagonal Structure ◽  
Rhombohedral Structure ◽  
Plastic Behavior ◽  
Long Period ◽  
Lpso Structure ◽  
Plastic Deformation Behavior ◽  
Deformation Modes

AbstractThe influence of a heat-treatment on the plastic deformation behavior in Mg12ZnY with a long-period stacking ordered (LPSO) structure was investigated by using crystals grown by the Bridgman method. Annealing of the crystal at 798 K for 3 days induced the change in the crystal structure of Mg12ZnY from the 18-fold rhombohedral structure (18R) to the 14-fold hexagonal structure (14H). The plastic behavior of those LPSO crystals showed a large variation depending on the loading axis in both crystals, because of the limitation of operative deformation modes in them. The change in the stacking sequence in the LPSO crystals did not show a large influence on the plastic deformation behavior at room temperature.

A Study on Dynamic Plastic Deformation Behavior of 5052 Aluminum Alloy

2019 ◽  
Vol 812 ◽  
pp. 45-52
Author(s):  
Ping Song ◽  
Wen Bin Li ◽  
Xiao Ming Wang
Keyword(s):  
Plastic Deformation ◽  
Aluminum Alloy ◽  
Strain Rate ◽  
Deformation Behavior ◽  
Split Hopkinson Pressure Bar ◽  
Rate Sensitivity ◽  
Plastic Behavior ◽  
Hopkinson Pressure Bar ◽  
Plastic Deformation Behavior ◽  
Constitutive Parameters

In this paper, the effects of temperature and strain rate on the plastic deformation behavior of 5052 aluminum alloy were investigated by quasi-static tensile test and split Hopkinson pressure bar (SHPB) experiments. Meanwhile, the stress-strain relations obtained through these experiments were employed for calibrating Johnson-Cook (J-C) plastic flow constitutive parameters of 5052 aluminum alloy. The results show that the strain rate sensitivity of 5052 aluminum alloy is insignificant in the range of 0.001s-1~3000s-1, while temperature has a great effect on the material plastic behavior. The experimental data are basically consistent with the predicted outcome of J-C constitutive model.

Effect of Grain Size on Deformation Twinning Behavior of Ti6Al4V Alloy

2015 ◽  
Vol 830-831 ◽  
pp. 337-340
Author(s):  
Ashish Kumar Saxena ◽  
Manikanta Anupoju ◽  
Asim Tewari ◽  
Prita Pant
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Strain Rate ◽  
Deformation Behavior ◽  
Deformation Behaviour ◽  
Air Cooling ◽  
Specific Strength ◽  
Aerospace Applications ◽  
Β Phase ◽  
Plastic Deformation Behavior

An understanding of the plastic deformation behavior of Ti6Al4V (Ti64) is of great interest because it is used in aerospace applications due to its high specific strength. In addition, Ti alloys have limited slip systems due to hexagonal crystal structure; hence twinning plays an important role in plastic deformation. The present work focuses upon the grain size effect on plastic deformation behaviour of Ti64. Various microstructures with different grain size were developed via annealing of Ti64 alloy in α-β phase regime (825°C and 850°C) for 4 hours followed by air cooling. The deformation behavior of these samples was investigated at various deformation temperature and strain rate conditions. Detailed microstructure studies showed that (i) smaller grains undergoes twinning only at low temperature and high strain rate, (ii) large grain samples undergo twinning at all temperatures & strain rates, though the extent of twinning varied.

scholarly journals Plastic Deformation Behavior of Metal for Complex Loading Paths

1975 ◽  
Vol 18 (125) ◽  
pp. 1209-1217 ◽  
Author(s):  
Kenji KANEKO ◽  
Kozo IKEGAMI ◽  
Eiryo SHIRATORI
Keyword(s):  
Plastic Deformation ◽  
Deformation Behavior ◽  
Complex Loading ◽  
Loading Paths ◽  
Plastic Deformation Behavior

Prediction of 3D Microstructure and Plastic Deformation Behavior in Dual-Phase Steel Using Multi-Phase Field and Crystal Plasticity FFT Methods

2015 ◽  
Vol 651-653 ◽  
pp. 570-574 ◽  
Author(s):  
Akinori Yamanaka
Keyword(s):  
Plastic Deformation ◽  
Crystal Plasticity ◽  
Phase Field ◽  
Deformation Behavior ◽  
Fast Fourier Transformation ◽  
Dual Phase ◽  
Dp Steel ◽  
3D Microstructure ◽  
Plastic Deformation Behavior ◽  
Multi Phase

The plastic deformation behavior of dual-phase (DP) steel is strongly affected by its underlying three-dimensional (3D) microstructural factors such as spatial distribution and morphology of ferrite and martensite phases. In this paper, we present a coupled simulation method by the multi-phase-field (MPF) model and the crystal plasticity fast Fourier transformation (CPFFT) model to investigate the 3D microstructure-dependent plastic deformation behavior of DP steel. The MPF model is employed to generate a 3D digital image of DP microstructure, which is utilized to create a 3D representative volume element (RVE). Furthermore, the CPFFT simulation of tensile deformation of DP steel is performed using the 3D RVE. Through the simulations, we demonstrate the stress and strain partitioning behaviors in DP steel depending on the 3D morphology of DP microstructure can be investigated consistently.

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