Application of-140 degrees C Sub-Zero Treatment For Cr-V Ledeburitic Steel Service Performance Improvement
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00504335" target="_blank" >RIV/68081723:_____/19:00504335 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/19:00331700 RIV/00216305:26210/19:PU136298
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs11661-019-05180-6" target="_blank" >https://link.springer.com/article/10.1007%2Fs11661-019-05180-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11661-019-05180-6" target="_blank" >10.1007/s11661-019-05180-6</a>
Alternative languages
Result language
angličtina
Original language name
Application of-140 degrees C Sub-Zero Treatment For Cr-V Ledeburitic Steel Service Performance Improvement
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/FV10385" target="_blank" >FV10385: Advanced Centrifugal Compressor Impellers Manufacturing Technologies</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Metallurgical and Materials Transactions A
ISSN
1073-5623
e-ISSN
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Volume of the periodical
50A
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
22
Pages from-to
2413-2434
UT code for WoS article
000463991300030
EID of the result in the Scopus database
2-s2.0-85063979168