Grain Orientation, Texture Component, and Mechanical Properties of Ring Components Subjected to a Novel Compact Cast-Rolling Compound Forming

2022 ◽  
Author(s):  
Fangcheng Qin ◽  
Huiping Qi ◽  
Chongyu Liu ◽  
Yongtang Li
Keyword(s):  
Mechanical Properties ◽  
Texture Component ◽  
Grain Orientation

scholarly journals Investigation of Damage Evolution in Heterogeneous Rock Based on the Grain-Based Finite-Discrete Element Model

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3969
Author(s):  
Shirui Zhang ◽  
Shili Qiu ◽  
Pengfei Kou ◽  
Shaojun Li ◽  
Ping Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Grain Orientation ◽  
Damage Evolution ◽  
Discrete Element ◽  
Uniaxial Tensile ◽  
Tensile Cracks ◽  
Rock Heterogeneity ◽  
Heterogeneous Rock

Granite exhibits obvious meso-geometric heterogeneity. To study the influence of grain size and preferred grain orientation on the damage evolution and mechanical properties of granite, as well as to reveal the inner link between grain size‚ preferred orientation, uniaxial tensile strength (UTS) and damage evolution, a series of Brazilian splitting tests were carried out based on the combined finite-discrete element method (FDEM), grain-based model (GBM) and inverse Monte Carlo (IMC) algorithm. The main conclusions are as follows: (1) Mineral grain significantly influences the crack propagation paths, and the GBM can capture the location of fracture section more accurately than the conventional model. (2) Shear cracks occur near the loading area, while tensile and tensile-shear mixed cracks occur far from the loading area. The applied stress must overcome the tensile strength of the grain interface contacts. (3) The UTS and the ratio of the number of intergrain tensile cracks to the number of intragrain tensile cracks are negatively related to the grain size. (4) With the increase of the preferred grain orientation, the UTS presents a “V-shaped” characteristic distribution. (5) During the whole process of splitting simulation, shear microcracks play the dominant role in energy release; particularly, they occur in later stage. This novel framework, which can reveal the control mechanism of brittle rock heterogeneity on continuous-discontinuous trans-scale fracture process and microscopic rock behaviour, provides an effective technology and numerical analysis method for characterizing rock meso-structure. Accordingly, the research results can provide a useful reference for the prediction of heterogeneous rock mechanical properties and the stability control of engineering rock masses.

Effect of grain orientation on mechanical properties and thermomechanical response of Sn-based solder interconnects

2013 ◽  
Vol 85 ◽  
pp. 64-72 ◽  
Author(s):  
Hongtao Chen ◽  
Bingbing Yan ◽  
Ming Yang ◽  
Xin Ma ◽  
Mingyu Li
Keyword(s):  
Mechanical Properties ◽  
Grain Orientation ◽  
Thermomechanical Response ◽  
Solder Interconnects

Phase Composition, Texture and Mechanical Properties of 80 mm Plates of Al-2.8Cu-1.7Li-0.5Mg-0.5Zn-0.1Zr-0.06Sc Alloy

2016 ◽  
Vol 877 ◽  
pp. 290-295
Author(s):  
Sergey Betsofen ◽  
Vladislav Antipov ◽  
Maxim Knyazev ◽  
Margarita Dolgova
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Yield Stress ◽  
Texture Component ◽  
Transverse Direction ◽  
Plate Thickness ◽  
Short Transverse ◽  
Δ Phase ◽  
Medium Layer ◽  
Plate Plane

Phase composition, texture and mechanical properties of plates 80 mm thick from Al-2.8Cu-1.7Li-0.5Mg-0.5Zn-0.1Zr-0.06Sc alloy were investigated. It has been found that strength characteristics are maximum in median section (ultimate strength and the yield stress of 570 MPa and 540 MPa, respectively). In 0,25T section (where T is the plate thickness) these quantities make 530 MPa and 490 MPa, and in the short transverse direction of only 490 MPa and 440 MPa. Textural studies showed that on medium layer of a plate 0,3-0,35T thick is observed identical to a matrix and δ'-phase intensive single-component texture with an arrangement of the plane {011} parallel to the plate plane with domination of a "brass" texture component {110} <112>.

Evolution of Texture during Directional Solidification of Giant Magnetostrictive Tb0.3Dy0.7Fe1.95 Alloy

2011 ◽  
Vol 702-703 ◽  
pp. 876-879
Author(s):  
Mithun Palit ◽  
J. Arout Chelvane ◽  
Himalay Basumatary ◽  
S. Banumathy ◽  
A.K. Singh ◽  
...  
Keyword(s):  
Directional Solidification ◽  
Texture Component ◽  
Grain Orientation ◽  
Solidification Rate ◽  
The Other ◽  
Directionally Solidified

The development of preferred grain orientation has been investigated in the directionally solidified samples of Tb0.3Dy0.7Fe1.95 as a function of pulling speed viz. 10, 40, 70 and 100 cm/h. The study indicates that at lower solidification rate (10 cm/h) growth of and texture components are preferred, whereas, texture component becomes dominant at higher pulling rate (100 cm/h). However, as the solidification progresses, growth of texture component is observed subduing the other components. Consequently, the magnetostriction improves from 1100 to 1350 micro-strains with higher pulling speed.

scholarly journals Microstructural differences between naturally-deposited and laboratory beach sands

2021 ◽  
Vol 24 (1) ◽  
Author(s):  
Amy Ferrick ◽  
Vanshan Wright ◽  
Michael Manga ◽  
Nicholas Sitar
Keyword(s):  
Mechanical Properties ◽  
Coordination Number ◽  
Grain Orientation ◽  
Flowing Water ◽  
X Ray ◽  
Depositional Processes ◽  
Grain Orientations ◽  
Computed Microtomography ◽  
X Ray Computed ◽  
Beach Sands

AbstractThe orientation of, and contacts between, grains of sand reflect the processes that deposit the sands. Grain orientation and contact geometry also influence mechanical properties. Quantifying and understanding sand microstructure thus provide an opportunity to understand depositional processes better and connect microstructure and macroscopic properties. Using x-ray computed microtomography, we compare the microstructure of naturally-deposited beach sands and laboratory sands created by air pluviation in which samples are formed by raining sand grains into a container. We find that naturally-deposited sands have a narrower distribution of coordination number (i.e., the number of grains in contact) and a broader distribution of grain orientations than pluviated sands. The naturally-deposited sand grains orient inclined to the horizontal, and the pluviated sand grains orient horizontally. We explain the microstructural differences between the two different depositional methods by flowing water at beaches that re-positions and reorients grains initially deposited in unstable grain configurations.

Texture in Welded Industrial Aluminum

2014 ◽  
Vol 563 ◽  
pp. 7-12
Author(s):  
Zakaria Boumerzoug ◽  
Nedjma Chérifi ◽  
Thierry Baudin
Keyword(s):  
Heat Treatment ◽  
Epitaxial Growth ◽  
Texture Component ◽  
Weld Joint ◽  
Grain Orientation ◽  
Welded Joint ◽  
The Other ◽  
Isothermal Heat Treatment ◽  
Electron Back Scattered Diffraction ◽  
Industrial Aluminum

In this investigation, grain orientation has been studied in an industrial aluminium Al99.5 which has been welded by TIG process. The optical microscopy and EBSD (Electron Back Scattered Diffraction) were the main techniques used to illustrate the effect of welding on grain orientation in fusion zone and in heat affected zone. Epitaxial growth has been observed in weld joint and texture of each zone has been determined. On the other hand, the effect of isothermal heat treatment at 400 °C on homogenization of welded joint has been also studied. It was shown that the cube orientation {001}<100> is the dominant texture component in welded joint before or after heat treatments.

scholarly journals The effect of laser scanning strategies on texture, mechanical properties, and site-specific grain orientation in selective laser melted 316L SS

2020 ◽  
Vol 193 ◽  
pp. 108852 ◽  
Author(s):  
Jithin James Marattukalam ◽  
Dennis Karlsson ◽  
Victor Pacheco ◽  
Přemysl Beran ◽  
Urban Wiklund ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Orientation ◽  
Laser Scanning ◽  
Site Specific ◽  
Scanning Strategies

Correlation mechanism of grain orientation/microstructure and mechanical properties of Cu–Ni–Si–Co alloy

2021 ◽  
pp. 141239
Author(s):  
He Wei ◽  
Yin-li Chen ◽  
Yina Zhao ◽  
Wei Yu ◽  
Lan Su ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Orientation ◽  
Microstructure And Mechanical Properties

scholarly journals Influence of Friction Stir Welding on Mechanical Properties of Butt Joints of AZ61 Magnesium Alloy

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Seung-Ju Sun ◽  
Jung-Seok Kim ◽  
Woo Geun Lee ◽  
Jae-Yong Lim ◽  
Yohan Go ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Grain Orientation ◽  
Electron Backscatter Diffraction ◽  
Base Material ◽  
Stir Zone ◽  
Friction Stir ◽  
Az61 Magnesium Alloy ◽  
Fracture Behaviors ◽  
Backscatter Diffraction

In this study, the effect of heat input on the mechanical properties and fracture behaviors of AZ61 magnesium alloy joints has been studied. Magnesium alloy AZ61 plates with thickness of 5 mm were welded at different ratios of tool rotational speed to welding speed (ω/ν). The average ultimate tensile strength of all weld conditions satisfying a ω/ν ratio of 3 reached 100% of the strength of the base material. Fractures occurred at the interface between the thermomechanical affected zone at advancing side and the stir zone in all welded specimens. From the scanning electron microscope and electron backscatter diffraction analysis, it was determined that the interface between the thermomechanical affected zone and the stir zone, which is the region where the grain orientation changes, was the weakest part; the advancing side region was relatively weaker than the retreating side region because the grain orientation change occurred more dramatically in the advancing side region.

scholarly journals Evolution of Microstructures on Stainless Steel induced by Ultra-Short Laser Ablation

2019 ◽  
Author(s):  
Norbert Ackerl ◽  
Gabriela Fisch ◽  
Janko Auerswald ◽  
Konrad Wegener
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Laser Ablation ◽  
Grain Orientation ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Surface Structures ◽  
Periodic Surface ◽  
Processing Window ◽  
Grain Orientations

Ultra-short pulsed laser ablation of stainless steel is accompanied by the evolution of different microstructures. Depending on the fuence, accumulated energy and number of laser passes cones from impurities, laser induced periodic surface structures and conelike protrusion (CLP) evolve at the surface. These often unwanted morphologies can be inhibited by carefully choosing the strategy and laser parameters. Here, the identifed region shows a small processing window fordesigned 515nm sub 1 ps ablation leading to low surface roughness. CLP are still not well understood and here a pre-cursor structure is reported. Subsequently, the CLP growth is grain orientation and polarization dependent and studied in more depth. Preferentially, CLP start to evolve at the (101) grain orientations with linear polarized laser radiation. Moreover, a nanoindentation study reveals robust mechanical properties, which could be beneficial for tribology applications in the hydrodynamic regime.

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