Publication detail

Application of-140 degrees C Sub-Zero Treatment For Cr-V Ledeburitic Steel Service Performance Improvement

JURČI, P. ĎURICA, J. DLOUHÝ, I. HORNÍK, J. PLANIETA, R. KRALOVIČ, D.

Original Title

Application of-140 degrees C Sub-Zero Treatment For Cr-V Ledeburitic Steel Service Performance Improvement

Type

journal article in Web of Science

Language

English

Original Abstract

The effect of -140 degrees C, 17-hour sub-zero treatment and subsequent tempering on the hardness, flexural strength, and fracture toughness of Cr-V ledeburitic steel was investigated. The main purpose was to highlight the role of microstructural alterations, such as a decrease of the retained austenite content, the quantitative parameters of carbide distributions, or others, due to applied treatments. Compared to conventional treatments, the applied sub-zero treatment improves the hardness of the material significantly within the whole range of tempering temperatures used. The hardness enhancement is in the range from 197 to 137 HV10 for tempering at 170 degrees C to 450 degrees C. The flexural strength is slightly improved at low tempering conditions up to 170 degrees C, while there is almost no effect of the sub-zero treatment on flexural strength for higher tempering temperatures. The fracture toughness is substantially improved (by about 3 MPam(1/2)) in the untempered state as well as after high-temperature tempering. The fracture toughness is slightly worsened, by about 0.15 to 1 MPam(1/2), within the 170 degrees C to 450 degrees C range of tempering temperatures. These changes in fracture toughness are reached with a significant increase of hardness. This steel performance is associated with enhanced fracture surface roughness and an increased ductile microvoid coalescence micromechanism presence in fracture surfaces. The results also show that treatment at -140 degrees C leads to a greater enhancement of the complex of mechanical properties than can be obtained by soaking the samples in liquid nitrogen. (C) The Minerals, Metals & Materials Society and ASM International 2019

Keywords

Tool steel; fracture toughness; wear resistance; heat treatment; microstructure; martensite

Authors

JURČI, P.; ĎURICA, J.; DLOUHÝ, I.; HORNÍK, J.; PLANIETA, R.; KRALOVIČ, D.

Released

13. 3. 2019

Publisher

SPRINGER

Location

NEW YORK

ISBN

1073-5623

Periodical

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE

Year of study

50A

Number

5

State

United States of America

Pages from

2413

Pages to

2434

Pages count

22

URL

https://link.springer.com/article/10.1007/s11661-019-05180-6

BibTex

@article{BUT163673,
  author="Petr {Jurči} and Juraj {Ďurica} and Ivo {Dlouhý} and Jakub {Horník} and Richard {Planieta} and Dominik {Kralovič}",
  title="Application of-140 degrees C Sub-Zero Treatment For Cr-V Ledeburitic Steel Service Performance Improvement",
  journal="METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE",
  year="2019",
  volume="50A",
  number="5",
  pages="2413--2434",
  doi="10.1007/s11661-019-05180-6",
  issn="1073-5623",
  url="https://link.springer.com/article/10.1007/s11661-019-05180-6"
}