Journal ArticleDOI
A comparative study on Johnson-Cook and modified Johnson-Cook constitutive material model to predict the dynamic behavior laser additive manufacturing FeCr alloy
TLDR
In this article, the effects of high strain rate and elevated temperature on the deformation behaviors of FeCr alloy specimen, obtained by laser additive manufacturing (LAM), were investigated by Split Hopkinson Pressure Bar tests with the strain rates of 1000 −8000 s −1 and temperature range of 20 −800 ˚C.About:
This article is published in Journal of Alloys and Compounds.The article was published on 2017-11-05. It has received 91 citations till now. The article focuses on the topics: Strain rate & Split-Hopkinson pressure bar.read more
Citations
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Hot deformation behavior and microstructure analysis of 25Cr3Mo3NiNb steel during hot compression tests
TL;DR: In this paper, the authors studied the hot deformation behavior of 25Cr3Mo3NiNb steel by means of isothermal hot compression tests and established constitutive equations based on strain compensated Arrhenius and modified Johnson-Cook models, respectively.
Journal ArticleDOI
Additive manufacturing – A review of hot deformation behavior and constitutive modeling of flow stress
TL;DR: In this paper , the state of the art of the elevated temperature deformation behavior and constitutive description of flow stress during thermomechanical processing of additively manufactured parts is summarized.
Journal ArticleDOI
Hot deformation behavior and processing map of a superlight dual-phase Mg–Li alloy
Gang Liu,Wen Xie,Amir Hadadzadeh,Guobing Wei,Zhenduo Ma,Junwei Liu,Yan Yang,Weidong Xie,Xiaodong Peng,Mary Wells +9 more
TL;DR: In this article, a superlight dual phase Mg-9Li-3Al-2Y alloy was investigated by developing constitutive equations and constructing processing maps based on dynamic materials model (DMM), and the instability domains occurred over a narrow temperature range of 423-450 K and strain rate range of 0.01-1s−1.
Journal ArticleDOI
Characterization of hot deformation behavior and constitutive modeling of Al–Mg–Si–Mn–Cr alloy
TL;DR: In this paper, a homogeneous Al-Mg-Si-Mn-Cr alloy was analyzed by thermal simulation test at deformation temperature range of 653-803 K and strain rate range of 0.01-10−1.
Journal ArticleDOI
High-temperature deformation mechanisms and physical-based constitutive modeling of ultra-supercritical rotor steel
TL;DR: In this article, a two-stage constitutive model was developed to predict the flow stress of FB2 rotor steel during hot deformation in the temperature range from 900°C to 1200°C at strain rates from 0.001s−1 to 0.1 s−1 using Gleeble-3500 thermo-simulation machine.
References
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Journal ArticleDOI
Microtubule nucleation by γ-tubulin complexes
TL;DR: The first crystallographic analysis of a non-γ-tubulin γTuRC component has resulted in a new appreciation of the relationships among all γ TuRC proteins, leading to a refined model of their organization and function.
Journal ArticleDOI
Laser additive manufacturing of metallic components: materials, processes and mechanisms
TL;DR: Additive manufacturing implies layer by layer shaping and consolidation of powder feedstock to arbitrary configurations, normally using a computer controlled laser as discussed by the authors, which is based on a novel materials incremental manufacturing philosophy.
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Additive manufacturing and its societal impact: a literature review
TL;DR: In this article, the societal impact of additive manufacturing from a technical perspective is reviewed, and an abundance of evidences are found to support the promises of additive-manufacturing in the following areas: (1) customized healthcare products to improve population health and quality of life, (2) reduced environmental impact for manufacturing sustainability, and (3) simplified supply chain to increase efficiency and responsiveness in demand fulfillment.
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A constitutive description of the deformation of copper based on the use of the mechanical threshold stress as an internal state variable
P.S. Follansbee,U.F. Kocks +1 more
TL;DR: In this article, the axisymmetric deformation behavior of 0.9999 Cu is investigated at strain rates from 10−4 to 104 s−1, and it is shown that the athermal dislocation accumulation rate, or Stage II hardening rate, becomes a strong function of strain rate.