A unified fracture criterion considering stress state dependent transition of failure mechanisms in bcc steels at –196 °C
Reads0
Chats0
TLDR
The fracture properties of a high-strength steel with a body-centered cubic (bcc) crystal structure have been characterized at −196 °C by performing tensile tests with different specimen geometries, three-point bending tests using Charpy specimens, and fracture mechanics tests, covering a broad range of stress states under quasi-static conditions as discussed by the authors .About:
This article is published in International Journal of Plasticity.The article was published on 2022-06-01 and is currently open access. It has received 11 citations till now. The article focuses on the topics: Brittleness & Ductility (Earth science).read more
Citations
More filters
Journal ArticleDOI
A unified ductile fracture criterion suitable for sheet and bulk metals considering multiple void deformation modes
TL;DR: In this paper , a general uncoupled fracture criteria (DFC) was proposed to forecast the fracture initiation of sheet and bulk ductile metals, taking into account multiple void deformation modes and the effects of accelerated void growth and coalescence under high stress triaxiality.
Journal ArticleDOI
Influence of Stress States on Cleavage Fracture in X70 Pipeline Steels
TL;DR: In this paper , the cleavage fracture properties of a X70 steel at liquid nitrogen temperature (−196 °C) were characterized over a broad range of stress states, including shear, central hole, notched dog bone, and side grooved plane strain.
Journal ArticleDOI
Modeling anisotropic ductile fracture of AA7075-T6 sheet for sheet metal forming considering anisotropic stress state
TL;DR: In this article , a new anisotropic ductile fracture model is developed by introducing the aisotropic stress triaxiality into the weight equation of the shear-controlled fracture criterion.
Journal ArticleDOI
Cryogenic ductile and cleavage fracture of bcc metallic structures – Influence of anisotropy and stress states
TL;DR: In this paper , the anisotropic cryogenic ductile and cleavage fracture properties of a body-centered cubic (bcc) steel at −196°C have been investigated under a broad spectrum of loading conditions, crossing stress triaxiality range from −1/3 to 1.5, and along three loading directions.
Journal ArticleDOI
Coupled crystal plasticity and micromechanics damage model based on viscoplastic self-consistent theory and X-ray computed tomography
TL;DR: In this article , a modified-DVPSC model considering void nucleation and coalescence was proposed and experimentally verified in this work, which accurately describes the stress-strain state, the porosity evolution, and fracture behaviors.
References
More filters
Journal ArticleDOI
A fracture-resistant high-entropy alloy for cryogenic applications
Bernd Gludovatz,Anton Hohenwarter,Dhiraj Catoor,Edwin H. Chang,Easo P. George,Easo P. George,Robert O. Ritchie,Robert O. Ritchie +7 more
TL;DR: This work examined a five-element high-entropy alloy, CrMnFeCoNi, which forms a single-phase face-centered cubic solid solution, and found it to have exceptional damage tolerance with tensile strengths above 1 GPa and fracture toughness values exceeding 200 MPa·m1/2.
Journal ArticleDOI
A new model of metal plasticity and fracture with pressure and Lode dependence
Yuanli Bai,Tomasz Wierzbicki +1 more
TL;DR: In this paper, a 3D asymmetric fracture locus, in the space of equivalent fracture strain, stress triaxiality and the Lode angle parameter, is proposed.
Journal ArticleDOI
A Local Criterion for Cleavage Fracture of a Nuclear Pressure Vessel Steel
TL;DR: In this article, a local criterion based on Weibull theory was proposed to determine the mechanical conditions for cleavage fracture at the crack tip of A508 class 3 steel, and the results can be accounted for in terms of the local criterion which takes into account the effect of plastic strain.
Journal ArticleDOI
Application of extended Mohr–Coulomb criterion to ductile fracture
TL;DR: In this article, the Mohr-Coulomb (M-C) fracture criterion is revisited with an objective of describing ductile fracture of isotropic crack-free solids.
Journal ArticleDOI
Continuum Models of Ductile Fracture: A Review
TL;DR: In this paper, the authors present a review of the material constitutive equations and computational tools which have been recently developed to simulate ductile rupture and fracture, which are used in structural computations.