Stress relaxation and mechanical equation of state in b.c.c. metals in monotonic loading

✍ Scribed by H Yamada; Che-Yu Li

• Publisher: Elsevier Science
• Year: 1974
• Weight: 606 KB
• Volume: 22
• Category: Article
• ISSN: 0001-6160
• DOI: 10.1016/0001-6160(74)90015-7

✦ Synopsis

Stress relaxation experiments in monotonic loading have been performed on niobium and z-iron of two purity levels. The stress-strain rate relationship obtained at constant structures suggests that these metals exhibit the behavior of mechanical equation of state in the absence of discontinuous flow.

RELAXATIOS

DE L-4 COSTR_iISTE ET EQUATIOS YECASIQCE D'ETAT D_%XS LES 1IET_%VS CC. SOUYIS ;r USE CN-%RGE JIOSOTOSE Des experiences de relaxation de la contra&e SOILS une charge monotone ont 606 effectu&s sup du niobium et du fer a de deux degrCs de pure+&. La relation contrainte-vitesse de d4formation obtenue pour des strnotures con&antes suggere que ces m&aus prtjsentent un comportement correspondant B l'equation mgcanique d'8tat en l'absence de discontinuit6 dans l'&oulement plastique. SP_~SSCSGSREL_~SdTIOS USD MECH_~ISCHE ZTjSTdSDSGLEICHUSG IS B.C.C. JIET,ILLES BE1 MOSOTOSER BELdSTUSG ,4n Siob-und z-Eisenproben zwei verschiedener Reinheiten tvurden Spannungsrelasationsesperimente bei monotoner Belastung du~hgef~hrt. Die bei konstanten Strukturen gemessenen Verfestigunnskurven deuten darauf hin, da13 diese Metalle die meohanische Zustandsgleic~~lng in Abxvesenheit &iskontinuierlichen Fliel3ens erfiillen.