The paper deals with degradation of the structural and mechanical parameters of DOMEX 700MC steel due to welding process. It is focused on evaluation of the mechanical heterogeneities influence at higher strain rate. DOMEX 700MC presents the microalloyed steel with the increasing utilization mainly for the lightweight construction of the transportation means. The precise characterization of material behavior at high strain rate is of great importance for reliable prediction of welded parts in that application. Evaluation of the local mechanical parameters of experimental welding joints was performed. The three-point instrumented dynamic fracture analyses and instrumented indentation tests were employed to study the elastic-plastic response of critical weldments sublayers. The static vs. dynamic yield strength and energy consumption to fracture was compared in different stages of temper influence. Structural analyses brought the information about the conducted structural changes in tempered zone. Fractography analyses were focused on evaluation of local differences in fracture behavior influenced by real metallurgy quality. Based on the experimental results, the used combination of loading method is suitable to determine the local mechanical properties and enable the estimation of temper sensitivity of analyzed steel.
eng
dc.format
p. 861-866
eng
dc.language.iso
eng
eng
dc.publisher
TANGER, spol. s r.o.
eng
dc.relation.ispartof
METAL 2016: 25th International Conference on Metallurgy and Materials
eng
dc.rights
Pouze v rámci univerzity
eng
dc.subject
DOMEX 700MC steel
eng
dc.subject
dynamic fracture
eng
dc.subject
indentation tests
eng
dc.subject
welding joints
eng
dc.subject
DOMEX700MC
cze
dc.subject
dynamický lom
cze
dc.subject
indentační testy
cze
dc.subject
svarové spoje
cze
dc.title
LOCAL ELASTIC-PLASTIC RESPONSE OF WELDING JOINTS OF DOMEX700MS STEEL
eng
dc.title.alternative
Lokální elasticko-plastická odezva svarových spojů oceli DOMEX700MC
cze
dc.type
ConferenceObject
eng
dc.description.abstract-translated
Článek je věnován degradaci strukturních a mechanických parametrů oceli DOMEX700MC vlivem svařování. K hodnocení kritické subvrstvy svarem ovlivněných oblastí byly použity dynamické rázové zkoušky, instrumentované indentační zkoušky, strukturní a fraktografické analýzy.
cze
dc.event
METAL 2016: 25th International Conference on Metallurgy and Materials (25.05.2016 - 27.05.2016)