scholarly journals Atomic Analysis of Cleavage Fracture in Nickel Crystal under Tension with Transverse Constraint.

1997 ◽  
Vol 63 (615) ◽  
pp. 2380-2386 ◽  
Author(s):  
Kisaragi YASHIRO ◽  
Takayuki KITAMURA ◽  
Ryuichi OHTANI
Keyword(s):  
Cleavage Fracture ◽  
Atomic Analysis ◽  
Nickel Crystal

Bridging microstructure and crystallography with the micromechanics of cleavage fracture in a lamellar pearlitic steel

2021 ◽  
pp. 116988
Author(s):  
Rakesh Kumar Barik ◽  
Abhijit Ghosh ◽  
Md. BasiruddinSk ◽  
Sankalp Biswal ◽  
Amlan Dutta ◽  
...  
Keyword(s):  
Cleavage Fracture ◽  
Pearlitic Steel

Fracture Morphology and Residual Stresses of TiAl-Based Alloys Sheet Fabricated by EB-PVD

2006 ◽  
Vol 324-325 ◽  
pp. 307-310
Author(s):  
De Ming Zhang ◽  
Gui Qing Chen ◽  
Chun Mei Zhang ◽  
Jie Cai Han
Keyword(s):  
Free Surface ◽  
Numerical Calculation ◽  
Tensile Stress ◽  
Residual Stresses ◽  
Intergranular Fracture ◽  
Cleavage Fracture ◽  
Vacuum Annealing ◽  
Fracture Morphology ◽  
Columnar Crystal ◽  
X Ray

The TiAl-based alloys sheet with 150 mm × 100 mm × 0.4 mm was fabricated successfully by using EB-PVD method. The fracture morphology and residual stresses of the sheet were analyzed by SEM, numerical calculation and X-ray stress analyzer. The results indicate that before stripping, the depositional layers have a higher compressive stress, and the substrate has a very lower tensile stress. For the isolated TiAl-based alloys sheet, the microstructure of as-deposited sheet is columnar crystal, and the residual stresses distribution on the free surface has a trend that its magnitude decreased gradually from center to edges. After vacuum annealing at 1273 K for 16 h, the columnar crystal transforms into the equiaxed, the residual stresses on the free surface are eliminated ultimately, and the fracture of the material is diverted from the manner of intergranular fracture to the mixed manner of intergranular fracture with cleavage fracture.

Sign in / Sign up

Export Citation Format

Share Document