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182 0 _ab
200 1 _aThe role of notch tip shape and radius on deformation mechanisms of 12Cr1MoV steel under impact loading. Part 1. Energy parameters of fracture
_fS. V. Panin [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: p. 594-596 (50 tit.)]
330 _aImpact loading curves and fracture energy of the notched 12Cr1MoV ductile steel specimens are analysed. The qualitative description and quantitative parameters are obtained for major stages of ductile and brittle fracture depending on the shape of the notch and the stress stiffness ahead. It was shown that a zone with enhanced plasticity forms in the vicinity of V-, U- and I-shaped notches at 20 °C testing temperature, giving rise to ductile fracture. The stress stiffness at the notch tip increased with testing temperature reduced to -40 °C. We demonstrated that the size of shear lips on a fracture surface is a quantitative characteristic of fracture. Using this approach, which is close by nature to non-linear fracture mechanics, together with the quantitative description of fracture surfaces, a physical–mechanical scheme of the specimen fracture was suggested for the case of enhanced and localized (constrained) plasticity near the stress concentrator tip.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tFatigue and Fracture of Engineering Materials and Structures
_d1979-
463 _tVol. 40, iss. 4
_v[P. 586-596]
_d2017
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aударная нагрузка
610 1 _aдеформация
610 1 _aразрушение
610 1 _aмасштабные уровни
610 1 _aэтапы
610 1 _aконцентраторы напряжений
610 1 _aизломы
610 1 _aобразцы
701 1 _aPanin
_bS. V.
_cspecialist in the field of material science
_cProfessor of Tomsk Polytechnic University, Doctor of technical sciences
_f1971-
_gSergey Viktorovich
_2stltpush
_3(RuTPU)RU\TPU\pers\32910
701 1 _aMaruschak
_bP. O.
_gPavel Orestovich
701 1 _aVlasov
_bI. V.
_cspecialist in the field of material science
_cEngineer of Tomsk Polytechnic University
_f1988-
_gIlya Viktorovich
_2stltpush
_3(RuTPU)RU\TPU\pers\33560
701 1 _aMoiseenko
_bD. D.
_gDmitry Davidovich
701 1 _aBerto
_bF.
_gFilippo
701 1 _aBishchak
_bR. T.
_gRoman Teodorovich
701 1 _aVinogradov
_bA. Yu.
_gAleksey Yurjevich
712 0 2 _aНациональный исследовательский Томский политехнический университет (ТПУ)
_bИнститут физики высоких технологий (ИФВТ)
_bКафедра материаловедения в машиностроении (ММС)
_h74
_2stltpush
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801 1 _aRU
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_c20141010
801 2 _aRU
_b63413507
_c20170810
_gRCR
856 4 _uhttp://dx.doi.org/10.1111/ffe.12533
942 _cCF