Effect of Prior Austenite Grain Size on Yielding Behavior of the Low-C Martensitic Stainless Steel

Kazumasa Kubota; Masahito Ueda; Hideki Nakagawa

doi:10.4028/www.scientific.net/MSF.879.1031

Paper Titles

Influence of Thermo- and HIP Treatments on the Microstructure and Mechanical Properties of IN625 Alloy Parts Produced by Selective Laser Melting: A Comparative Study
p.1008

Modelling Yield Strength in an A6061 Aluminium Alloy
p.1014

The 3D Imaging and Metrology of Microstructural Elements in Innovative Materials for Clean Energy Systems and Aeronautics
p.1019

Effect of Layer-by-Layer Texture Inhomogeneity on the Stress Corrosion of Gas Steel Tubes
p.1025

Effect of Prior Austenite Grain Size on Yielding Behavior of the Low-C Martensitic Stainless Steel
p.1031

Sheet Forming Processes for AW-7xxx Alloys: Relevant Process Parameters
p.1036

Resolving the Strength-Ductility Paradox through Severe Plastic Deformation of a Cast Al-7% Si Alloy
p.1043

Osteoconductivity of Protein Adsorbed Titanium Implants Using Hydrothermal Treatment
p.1049

Effect of Prior Strain on Damping Capacity and Mechanical Property during Heat Treatment
p.1053

HomeMaterials Science ForumMaterials Science Forum Vol. 879Effect of Prior Austenite Grain Size on Yielding...

Effect of Prior Austenite Grain Size on Yielding Behavior of the Low-C Martensitic Stainless Steel

Abstract:

The effect of the prior austenite grain size on the yielding behavior of as-quenched low-C martensitic stainless steel was investigated. Martensite (Fe-16%Cr-7%Ni-1.2%Mo-1.8%Cu-0.01%C alloy) samples with different prior austenite grain sizes were prepared by heat treatment for various times at 1273K. The microstructures of the martensite were observed by optical microscopy, scanning electron microscopy, electron backscatter diffraction, and X-ray diffractometry. Tensile tests were undertaken at various test speeds. Also, a relaxation test was performed before the tensile tests to determine the behavior of mobile dislocations. A lower elastic limit was observed at lower test speeds and a larger prior austenite grain size. Moreover, a lower tensile strength was observed at a larger prior austenite grain size.