Neutron Diffraction Study of Residual Stresses in a W-Ni-Co Heavy Alloy Processed by Rotary Swaging at Room and High Temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F21%3A10248063" target="_blank" >RIV/61989100:27360/21:10248063 - isvavai.cz</a>

Alternative codes found

RIV/61389005:_____/22:00541443

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs12540-020-00963-8" target="_blank" >https://link.springer.com/article/10.1007%2Fs12540-020-00963-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12540-020-00963-8" target="_blank" >10.1007/s12540-020-00963-8</a>

Result language

angličtina

Original language name

Neutron Diffraction Study of Residual Stresses in a W-Ni-Co Heavy Alloy Processed by Rotary Swaging at Room and High Temperatures

Original language description

Residual stresses were studied in tungsten heavy alloy bars produced by powder metallurgy and deformed by rotary swaging at room temperature (RT) and at 900 degrees C. Neutron diffraction technique was used to scan the residual stresses across the bars. Both tungsten particles and NiCo2W solid solution matrix were analysed. Maximum axial stresses of similar to 300 MPa and similar to 200 MPa were observed for the tungsten phase at the centre in the RT and in the high-temperature deformed samples, respectively. Compressive residual axial stresses were found close to the sample surface, showing that rotary swaging is a suitable deformation method for tungsten heavy alloys to provide an appropriate surface modification for its use in metallic parts undergoing, e.g., fatigue. Residual stresses developed in the NiCo2W-phase are larger than those found in the tungsten particles although with a secondary role in the overall equilibrium conditions due to its lower strength and smaller volume fraction. Total stresses for each phase were separated into macro- and microstresses. Macrostresses can be mainly influenced by the incompatibility of the elliptical cross-section of the sintered sample with the head of the rotary machine while microstresses are mainly developed by the elastic mismatch between the constituent phases.

Czech name

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Czech description

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Type

J_imp - 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

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Metals and Materials International

ISSN

1598-9623

e-ISSN

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Volume of the periodical

neuveden

Issue of the periodical within the volume

march

Country of publishing house

KR - KOREA, REPUBLIC OF

Number of pages

12

Pages from-to

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UT code for WoS article

000631486800001

EID of the result in the Scopus database

2-s2.0-85103155498