Effect of thermomechanical processing on structure and mechanical properties of WNiCo

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00636652" target="_blank" >RIV/68378271:_____/25:00636652 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27360/25:10258331

Výsledek na webu

<a href="https://hdl.handle.net/11104/0373356" target="_blank" >https://hdl.handle.net/11104/0373356</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/mawe.202400354" target="_blank" >10.1002/mawe.202400354</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of thermomechanical processing on structure and mechanical properties of WNiCo

Popis výsledku v původním jazyce

The study characterizes the effects of intensive plastic deformation, realized by the rotary swaging method, on the deformation behavior of WNiCo tungsten heavy alloy samples. To assess the differences in the deformation behaviors of the samples, evaluated via uniaxial compression tests (UCT), and characterize the microstructures, i. e. occurrence and development of hardening/softening processes, two different temperatures of swaging (900 degrees C and 1200 degrees C), and two different uniaxial compression testing temperatures (1100 degrees C and 1200 degrees C), were used. A relatively high strain rate of 10 s-1 was chosen for the testing because of the typical use of the tungsten heavy alloy for kinetic penetrators. The achieved results indicate that the development of softening processes, especially dynamic recrystallization, can occur within the swaged material, depending on the processing/testing conditions. Swaging at the lower temperature of 900 degrees C introduced significant work hardening and accumulation of strain, which promoted the development of dynamic recrystallization during the subsequent hot temperature testing. Swaging at 1200 degrees C, on the other hand, facilitated dynamic recrystallization and relaxation (especially within the nickel-cobalt matrix) already during processing, which consequently increased the activation energy necessary for the development of recrystallization during the hot testing.

Název v anglickém jazyce

Effect of thermomechanical processing on structure and mechanical properties of WNiCo

Popis výsledku anglicky

The study characterizes the effects of intensive plastic deformation, realized by the rotary swaging method, on the deformation behavior of WNiCo tungsten heavy alloy samples. To assess the differences in the deformation behaviors of the samples, evaluated via uniaxial compression tests (UCT), and characterize the microstructures, i. e. occurrence and development of hardening/softening processes, two different temperatures of swaging (900 degrees C and 1200 degrees C), and two different uniaxial compression testing temperatures (1100 degrees C and 1200 degrees C), were used. A relatively high strain rate of 10 s-1 was chosen for the testing because of the typical use of the tungsten heavy alloy for kinetic penetrators. The achieved results indicate that the development of softening processes, especially dynamic recrystallization, can occur within the swaged material, depending on the processing/testing conditions. Swaging at the lower temperature of 900 degrees C introduced significant work hardening and accumulation of strain, which promoted the development of dynamic recrystallization during the subsequent hot temperature testing. Swaging at 1200 degrees C, on the other hand, facilitated dynamic recrystallization and relaxation (especially within the nickel-cobalt matrix) already during processing, which consequently increased the activation energy necessary for the development of recrystallization during the hot testing.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Materialwissenschaft Und Werkstofftechnik

ISSN

0933-5137

e-ISSN

1521-4052

Svazek periodika

56

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

697-704

Kód UT WoS článku

001504163000013

EID výsledku v databázi Scopus

2-s2.0-105007534861