Effect of increased length fraction of Ʃ3n special boundaries on OAIC response of cold rolled Ni-based alloy 718 thin sheets

2021 ◽  
pp. 141922
Author(s):  
Flávia da Cruz Gallo ◽  
Luiz Maurício Barreto de Azevedo ◽  
Arthur Ribeiro Figueiredo ◽  
Amanda de Vasconcelos Varela ◽  
Leonardo Sales Araújo ◽  
...  
Keyword(s):  
Thin Sheets ◽  
Alloy 718 ◽  
Special Boundaries ◽  
Length Fraction ◽  
Cold Rolled

Anisotropic yielding behavior and associated mechanism of cold rolled and annealed Zircaloy-4 alloy thin sheets under tensile condition

2020 ◽  
Vol 242 ◽  
pp. 122539
Author(s):  
Fuzhou Han ◽  
Geping Li ◽  
Chengze Liu ◽  
Fusen Yuan ◽  
Yingdong Zhang ◽  
...  
Keyword(s):  
Thin Sheets ◽  
Yielding Behavior ◽  
Cold Rolled ◽  
Anisotropic Yielding

Texture and Microstructure for Magnetic Properties of Two-Stage Cold-Rolled Fe-6.5 Wt Pct Si Thin Sheets

2015 ◽  
Vol 47 (12) ◽  
pp. 5771-5776 ◽  
Author(s):  
Yongchuang Yao ◽  
Yuhui Sha ◽  
Jinlong Liu ◽  
Fang Zhang ◽  
Liang Zuo
Keyword(s):  
Magnetic Properties ◽  
Thin Sheets ◽  
Two Stage ◽  
Cold Rolled

Microstructure and Mechanical Properties of Al Added Ni3(Si,Ti) Intermetallic Thin Sheets

2010 ◽  
Vol 654-656 ◽  
pp. 480-483
Author(s):  
Yasuyuki Kaneno ◽  
Yasunori Fujimoto ◽  
Takayuki Takasugi
Keyword(s):  
High Temperature ◽  
Single Phase ◽  
Thermomechanical Processing ◽  
Al Alloy ◽  
Thin Sheets ◽  
Intermetallic Alloys ◽  
Ordered Structure ◽  
Two Phase ◽  
Cold Rolled ◽  
High Temperature Tensile

The effect of Al addition on microstructures and tensile properties of cold-rolled Ni3(Si,Ti) intermetallic alloys with L12 ordered structure, which were fabricated through thermomechanical processing from arc-melted ingots, were investigated. Addition of 4 and 8 at.% Al to Ni3(Si,Ti) was conducted in two ways that Al substituted for Ti site and both for Ni and Ti sites, respectively. The alloys made by the former way showed a two-phase microstructure consisting of disordered fcc Ni solid solution dispersions in the L12 matrix, irrespective of Al contents, while the 4 at.% Al alloy made by the latter way exhibited an L12 single-phase microstructure. These alloys were successfully cold-rolled to thin sheets with a thickness of 200 μm except the 8 at.% Al alloy made by the latter way. For the thermomechanically processed 4 at.% Al alloys, high-temperature yield stress was higher in the alloy made by the latter way than in the alloy made by the former one, suggesting that the single-phase microstructure consisting of whole L12 ordered structure is favorable for high-temperature tensile property.

Tensile deformation and fracture behaviours of cold rolled Cu-3wt.%Ag-0.5wt.%Zr thin sheets with different annealed microstructures

2019 ◽  
Vol 756 ◽  
pp. 27-34 ◽  
Author(s):  
Gang Chen ◽  
JiaZheng Shen ◽  
Qiang Zhu ◽  
ShengJie Yao ◽  
ChuanJie Wang ◽  
...  
Keyword(s):  
Tensile Deformation ◽  
Thin Sheets ◽  
Deformation And Fracture ◽  
Cold Rolled

Effects of Normalizing Annealing on the Recrystallization Texture of 4.2wt.%Si Non-Oriented Electrical Steel Thin Sheets

2012 ◽  
Vol 535-537 ◽  
pp. 615-619 ◽  
Author(s):  
Jinlong Liu ◽  
Yu Hui Sha ◽  
Yong Chuang Yao ◽  
Fang Zhang ◽  
Liang Zuo
Keyword(s):  
Cold Rolling ◽  
Recrystallization Texture ◽  
Electrical Steel ◽  
Shear Bands ◽  
Rolling Process ◽  
Thin Sheets ◽  
Conventional Procedure ◽  
Cold Rolling And Annealing ◽  
Cold Rolled ◽  
Normalizing Annealing

The 4.2wt.%Si non-oriented electrical steel thin sheets with the thickness of 0.30mm were produced by the conventional procedure including hot rolling, cold rolling and annealing. The recrystallization texture was analyzed with emphasis on the effect of normalizing annealing. The results show that the  fiber with peak at {111} is weaker and η fiber is stronger in the sheets with normalizing annealing than those without normalizing annealing, either under the cold rolled reduction of 77% or 86%. Effects of normalizing annealing on the recrystallization texture can be explained in terms of the characteristic of the shear bands formed during cold rolling process.

Characterization of Coherent, Ordered Precipitates in Nickel-Base Alloys

1973 ◽  
Vol 31 ◽  
pp. 144-145
Author(s):  
B. H. Kear ◽  
J. M. Oblak
Keyword(s):  
Stable Phase ◽  
Nickel Base Superalloy ◽  
Alloy 718 ◽  
Commercial Alloy ◽  
Precipitate Morphology ◽  
Continuous Precipitation ◽  
Nickel Base ◽  
Base Superalloy ◽  
Strengthening Precipitate

A nickel-base superalloy is essentially a Ni/Cr solid solution hardened by additions of Al (Ti, Nb, etc.) to precipitate a coherent, ordered phase. In most commercial alloy systems, e.g. B-1900, IN-100 and Mar-M200, the stable precipitate is Ni3 (Al,Ti) γ′, with an LI2structure. In A lloy 901 the normal precipitate is metastable Nis Ti3 γ′ ; the stable phase is a hexagonal Do2 4 structure. In Alloy 718 the strengthening precipitate is metastable γ″, which has a body-centered tetragonal D022 structure.Precipitate MorphologyIn most systems the ordered γ′ phase forms by a continuous precipitation re-action, which gives rise to a uniform intragranular dispersion of precipitate particles. For zero γ/γ′ misfit, the γ′ precipitates assume a spheroidal.

Comparison of Acrylamide and Agar Gels by Freeze-Etching

1977 ◽  
Vol 35 ◽  
pp. 606-607
Author(s):  
Russell L. Steere ◽  
Eric F. Erbe
Keyword(s):  
Electron Microscope ◽  
Sodium Hydroxide ◽  
Sodium Hypochlorite ◽  
Chromic Acid ◽  
Distilled Water ◽  
Thin Sheets ◽  
Acid Cleaning ◽  
Agar Gels ◽  
Freeze Etching ◽  
Water Cut

Thin sheets of acrylamide and agar gels of different concentrations were prepared and washed in distilled water, cut into pieces of appropriate size to fit into complementary freeze-etch specimen holders (1) and rapidly frozen. Freeze-etching was accomplished in a modified Denton DFE-2 freeze-etch unit on a DV-503 vacuum evaporator.* All samples were etched for 10 min. at -98°C then re-cooled to -150°C for deposition of Pt-C shadow- and C replica-films. Acrylamide gels were dissolved in Chlorox (5.251 sodium hypochlorite) containing 101 sodium hydroxide, whereas agar gels dissolved rapidly in the commonly used chromic acid cleaning solutions. Replicas were picked up on grids with thin Foimvar support films and stereo electron micrographs were obtained with a JEM-100 B electron microscope equipped with a 60° goniometer stage.Characteristic differences between gels of different concentrations (Figs. 1 and 2) were sufficiently pronounced to convince us that the structures observed are real and not the result of freezing artifacts.

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