scholarly journals Tensile Deformation and Fracture Behaviors of a Nickel-Based Superalloy via In Situ Digital Image Correlation and Synchrotron Radiation X-ray Tomography

Materials ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2461 ◽  
Author(s):  
Qiang Zhu ◽  
Gang Chen ◽  
Chuanjie Wang ◽  
Heyong Qin ◽  
Peng Zhang
Keyword(s):  
Mechanical Properties ◽  
Synchrotron Radiation ◽  
Digital Image Correlation ◽  
Tensile Deformation ◽  
Image Correlation ◽  
X Ray ◽  
Nickel Based Superalloy ◽  
Deformation And Fracture ◽  
Fracture Behaviors

Nickel-based superalloys have become key materials for turbine disks and other aerospace components due to their excellent mechanical properties at high temperatures. Mechanical properties of nickel-based superalloys are closely related to their microstructures. Various heat treatment processes were conducted to obtain the desired microstructures of a nickel-based superalloy in this study. The effect of the initial microstructures on the tensile deformation and fracture behaviors was investigated via in situ digital image correlation (DIC) and synchrotron radiation X-ray tomography (SRXT). The results showed that the size and volume fraction of γ″ and γ′ phases increased with the aging time. The yield strength and the ultimate tensile strength increased due to the precipitation strengthening at the expense of ductility. The surface strain analysis showed severely inhomogeneous deformation. The local strains at the edge of specimens were corresponded to higher void densities. The fracture of carbides occurred owing to the stress concentration, which was caused by the dislocation accumulation. The fracture mode was dimple coalescence ductile fracture.

In-situ investigation on tensile deformation and fracture behaviors of a new metastable β titanium alloy

2021 ◽  
Vol 799 ◽  
pp. 140187
Author(s):  
Jing Wang ◽  
Yongqing Zhao ◽  
Wei Zhou ◽  
Qinyang Zhao ◽  
Shixing Huang ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Tensile Deformation ◽  
Deformation And Fracture ◽  
In Situ Investigation ◽  
Fracture Behaviors

scholarly journals Alignment of sample position and rotation during in situ synchrotron X-ray micro-diffraction experiments using a Laue cross-correlation approach

2019 ◽  
Vol 52 (5) ◽  
pp. 1119-1127 ◽  
Author(s):  
Chenglu Zhang ◽  
Yubin Zhang ◽  
Guilin Wu ◽  
Wenjun Liu ◽  
Ruqing Xu ◽  
...  
Keyword(s):  
Tensile Deformation ◽  
Three Dimensional ◽  
Surface Region ◽  
Image Correlation ◽  
Polycrystalline Materials ◽  
X Ray ◽  
Sample Rotation ◽  
Average Grain Size ◽  
Sample Position

Laue micro-diffraction has proven to be able to reveal material properties at the sub-grain scale for many polycrystalline materials and is now routinely available at several synchrotron facilities, providing an approach for nondestructive three-dimensional probing of the microstructures and mechanical states of materials. However, for in situ experiments, maintaining the positioning of the sample throughout the experiment, to achieve a good alignment of the characterized volumes, is a challenging issue. The aim of the present work is to address this problem by developing an approach based on digital image correlation of focused-beam Laue diffraction patterns. The method uses small changes in the diffraction signal as a focused X-ray beam is scanned over a surface region to allow corrections to be made for both sample lateral movement and rotation. The method is demonstrated using a tensile deformation experiment on an Al sample with 2.5 µm average grain size. The results demonstrate an accuracy of 0.5 µm for sample position registration and a precision in sample rotation of ∼0.01°. The proposed method is fast to implement and does not require the use of additional surface markers.

scholarly journals Experimental and predicted mechanical properties of Cr1−xAIxN thin films, at high temperatures, incorporating in situ synchrotron radiation X-ray diffraction and computational modelling

RSC Advances ◽  
2017 ◽  
Vol 7 (36) ◽  
pp. 22094-22104 ◽  
Author(s):  
Ehsan Mohammadpour ◽  
Zhong-Tao Jiang ◽  
Mohmmednoor Altarawneh ◽  
Nicholas Mondinos ◽  
M. Mahbubur Rahman ◽  
...  
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Synchrotron Radiation ◽  
Computational Modelling ◽  
X Ray Diffraction ◽  
X Ray ◽  
Al Content ◽  
Magnetic Sputtering ◽  
Sputtering System

Cr1−xAlxN coatings, synthesised by an unbalanced magnetic sputtering system, showed improved microstructure and mechanical properties for ∼14–21% Al content.

In-situ X-ray diffraction during tensile deformation of ultrafine-grained copper using synchrotron radiation

2016 ◽  
Vol 96 (8) ◽  
pp. 294-304 ◽  
Author(s):  
Yoji Miyajima ◽  
Satoshi Okubo ◽  
Tomotaka Miyazawa ◽  
Hiroki Adachi ◽  
Toshiyuki Fujii
Keyword(s):  
Synchrotron Radiation ◽  
Tensile Deformation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ultrafine Grained
Sign in / Sign up

Export Citation Format

Share Document