Effect of thermomechanical processing via rotary swaging on properties and residual stress within tungsten heavy alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00524004" target="_blank" >RIV/68081723:_____/20:00524004 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27240/20:10243107 RIV/61989100:27360/20:10243107

Výsledek na webu

<a href="https://doi.org/10.1016/j.ijrmhm.2019.105120" target="_blank" >https://doi.org/10.1016/j.ijrmhm.2019.105120</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijrmhm.2019.105120" target="_blank" >10.1016/j.ijrmhm.2019.105120</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of thermomechanical processing via rotary swaging on properties and residual stress within tungsten heavy alloy

Popis výsledku v původním jazyce

The effects of cold and warm rotary swaging and subsequent post-process annealing on mechanical properties, residual stress, and structure development within WNiCo powder-based pseudo-alloy were predicted numerically and investigated experimentally. The swaging temperature of 900 degrees C imparted increase in the Young's and shear moduli, the post-process annealing at 900 degrees C also imparted decrease in the residual stress values, primarily due to structure recovery introduced within the matrix. Cold rotary swaging at 20 degrees C imparted ultimate tensile strength of almost 1 900 MPa, while warm rotary swaging at 900 degrees C introduced increased plasticity (almost 24 % after a single swaging pass). Post-process heat treatment promoted diffusion of W to the Ni/Co matrix, which increased strength, but remarkably decreased elongation to failure and residual stress. Numerically predicted results of mechanical behaviour corresponded to the experimental results and confirmed the favourable effects of the selected thermomechanical treatments on WNiCo performance.

Název v anglickém jazyce

Effect of thermomechanical processing via rotary swaging on properties and residual stress within tungsten heavy alloy

Popis výsledku anglicky

The effects of cold and warm rotary swaging and subsequent post-process annealing on mechanical properties, residual stress, and structure development within WNiCo powder-based pseudo-alloy were predicted numerically and investigated experimentally. The swaging temperature of 900 degrees C imparted increase in the Young's and shear moduli, the post-process annealing at 900 degrees C also imparted decrease in the residual stress values, primarily due to structure recovery introduced within the matrix. Cold rotary swaging at 20 degrees C imparted ultimate tensile strength of almost 1 900 MPa, while warm rotary swaging at 900 degrees C introduced increased plasticity (almost 24 % after a single swaging pass). Post-process heat treatment promoted diffusion of W to the Ni/Co matrix, which increased strength, but remarkably decreased elongation to failure and residual stress. Numerically predicted results of mechanical behaviour corresponded to the experimental results and confirmed the favourable effects of the selected thermomechanical treatments on WNiCo performance.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA19-15479S" target="_blank" >GA19-15479S: Zbytková napětí a mikrostruktura v kovových kompozitech modifikovaných extrémní plastickou deformací</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

International Journal of Refractory Metals & Hard Materials

ISSN

0263-4368

e-ISSN

—

Svazek periodika

87

Číslo periodika v rámci svazku

FEB

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

105120

Kód UT WoS článku

000526036800014

EID výsledku v databázi Scopus

2-s2.0-85075484771