Related Experiment Video
Updated: Sep 5, 2025
09:13
Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
Published on: April 1, 2017
13.7K
Deformation Texture of Bulk Cementite Investigated by Neutron Diffraction
Nozomu Adachi1, Haruki Ueno1, Satoshi Morooka2
1Department of Mechanical Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi 441-8580, Aichi, Japan.
Materials (Basel, Switzerland)
|July 9, 2022
Summary
Researchers investigated cementite
Area of Science:
- Materials Science
- Metallurgy
- Crystallography
Background:
- Understanding cementite's deformation mechanisms is crucial for improving steel properties.
- Previous studies on cementite deformation are limited due to challenges in preparing single-phase samples.
Purpose of the Study:
- To investigate the deformation behavior and texture evolution of bulk single-phase cementite under uniaxial compression.
- To identify the primary slip plane of cementite.
Main Methods:
- Fabrication of bulk single-phase cementite samples.
- Uniaxial compression testing at 833 K.
- Analysis of deformation texture using electron backscatter diffraction (EBSD) and neutron diffraction.
Main Results:
- A random texture was observed in the fabricated cementite samples prior to compression.
- Uniaxial compression resulted in the formation of a (010) fiber texture along the compressive axis.
- The primary slip plane of cementite was identified as (010).
Conclusions:
- The study successfully fabricated bulk single-phase cementite samples.
- The (010) plane is proposed as the primary slip plane in cementite based on the observed texture evolution.
- This finding contributes to understanding the mechanical properties of steels.
Related Concept Videos
01:18Porosity in Cement Paste
217
The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is...
The balance of water to cement in the mix is...
217
01:12Temperature Dependent Deformation
188
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
188
01:20Microcracking in Concrete
203
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
203
01:15Fineness of Cement
208
The fineness of cement directly influences the rate of hydration, as the hydration begins at the surface of the cement particles. In addition to hydration, the fineness of cement is vital for various properties of concrete including workability, gypsum requirement, and long-term behavior. The fineness of cement is represented in terms of the specific surface of cement which is typically measured in square meters per kilogram, with several methods available for this determination.
Direct...
Direct...
208
01:24Stress-Strain Diagram - Brittle Materials
2.8K
Brittle materials, including glass, cast iron, and stone, exhibit unique characteristics. They fracture without considerable change in their elongation rate, indicating that their breaking and ultimate strength are equivalent. Such materials also show lower strain levels at the point of rupture. The failure in brittle materials predominantly results from normal stresses, as evidenced by the rupture created along a surface perpendicular to the applied load. These materials do not display...
2.8K
01:10X-ray Diffraction of Biological Samples
4.0K
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
4.0K