Related Experiment Video
Updated: Nov 6, 2025

Determining the Mechanical Strength of Ultra-Fine-Grained Metals
Published on: November 22, 2021
Comparison on Tensile Characteristics of Plain C-Mn Steel with Ultrafine Grained Ferrite/Cementite Microstructure and
Yan Tian1, Mingchun Zhao1, Wenjian Liu1
1School of Materials Science and Engineering, Central South University, Changsha 410083, China.
Abstract:
This work investigated the tensile characteristics of plain C-Mn steel with an ultrafine grained ferrite/cementite (UGF/C) microstructure and coarse-grained ferrite/pearlite (CGF/P) microstructure. The tensile tests were performed at temperatures between 77 K and 323 K. The lower yield and the ultimate tensile strengths were significantly increased when the microstructure was changed from the CGF/P to the UGF/C microstructures, but the total elongation and the uniform elongation decreased. A microstructural change from the CGF/P microstructure to the UGF/C microstructure had an influence on the athermal component of the lower yield and the ultimate tensile strengths but not on the thermal component. The UGF/C microstructure with a higher carbon content provided a higher strength without losing ductility because cementite particles restrained necking.
Related Concept Videos
Mechanical Characteristics of Steel
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
Tensile Strength Considerations of Concrete
The dimensions and shape of a concrete specimen...
Fiber Reinforced Concrete
Yield Criteria for Ductile Materials under Plane Stress
The Maximum Shearing Stress Criterion, also known as...
Microcracking in Concrete
Ferrocement

