Journal ArticleDOI
The mechanisms for strengthening under dynamic loading for low carbon and microalloyed steel
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TLDR
In this paper, the effect of microstructure on dynamic behavior of structural steels was investigated through Taylor impact experiments. But, the authors focused on understanding the effects of micro-structural properties on dynamic behaviour of investigated materials.About:
This article is published in International Journal of Impact Engineering.The article was published on 2018-04-01. It has received 13 citations till now. The article focuses on the topics: Microalloyed steel & Work hardening.read more
Citations
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Journal ArticleDOI
Prediction and evaluation of fatigue life under random load based on low load strengthening characteristic
TL;DR: In this paper, an improved peak over threshold (POT) extrapolation method was proposed to reconstruct the load sequence in the middle of threshold, based on the improved extrapolated load, the distribution characteristics of mean and amplitude were analyzed and the two-dimensional joint probability distribution was established.
Journal ArticleDOI
Structure-Property Correlation and Constitutive Description of Structural Steels during Hot Working and Strain Rate Deformation.
TL;DR: An extensive review is carried out on the merits and limitations of constitutive models which are commonly used to model the deformation behaviour of plain carbon steels.
Journal ArticleDOI
Thermodynamic Analysis of Precipitation Process of MX-type Phases in High Strength Low Alloy Steels
TL;DR: In this article, the authors present the results of thermodynamic analysis of precipitation process of MX-type interstitial phases in austenite, based on the model proposed by Hillert and Staffanson, which was subsequently developed by Adrian.
Journal ArticleDOI
Load Characteristics in Taylor Impact Test on Projectiles with Various Nose Shapes
TL;DR: In this paper, the impact load produced by a projectile and its potential application in the Taylor impact test were designed and carried out for projectiles with four types of nose shapes, and the impact deformation characteristics and variation of impact load as a function of the nose shape and impact velocity were studied.
Journal ArticleDOI
Locating the optimal microstructural state against dynamic perforation by evaluating the strain-rate dependences of strength and hardness
Songcui Wu,Songcui Wu,Ruitao Qu,Ruitao Qu,Zihao Liu,Hui Li,Hui Li,Xiaohe Wang,Chengwen Tan,Peng Zhang,Peng Zhang,Zhefeng Zhang,Zhefeng Zhang +12 more
TL;DR: In this article, the authors conducted a comprehensive investigation on strength, hardness and failure mechanism of AISI 4340 steels with four different microstructural states in a wide range of loading rate.
References
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Journal ArticleDOI
An Investigation of the Mechanical Properties of Materials at very High Rates of Loading
TL;DR: In this article, a method of determining the stress-strain relation of materials when stresses are applied for times of the order of 20 microseconds is described, using a modification of the Hopkinson pressure bar and detonators were used to produce large transient stresses.
Journal ArticleDOI
The use of flat-ended projectiles for determining dynamic yield stress I. Theoretical considerations
TL;DR: In this article, it has been shown that the actual yield stress is considerably greater than this minimum, and methods are given for calculating a more probable value, and a minimum possible value can be assigned to the maximum acceleration of the material, and from this a minimum value for the yield stress can be calculated.
Journal ArticleDOI
The temperature and strain-rate dependence of the shear strength of mild steel
J. D. Campbell,W. G. Ferguson +1 more
TL;DR: In this paper, an account of experiments in which the shear flow stress of mild steel was measured at temperatures from 195 to 713°K and strain rates from 10−3 to 4 × 104 sec−1 was given.
Journal ArticleDOI
A model for the effect of grain size on the yield stress of metals
Marc A. Meyersm,E. Ashworth +1 more
TL;DR: In this paper, the authors proposed that the grain-size dependence of the yield stress of metals is due to the elastic incompatibility stresses at the grain boundaries, and the generation and motion of these "geometrically necessary" dislocations attenuated the stress concentrations; a work-hardened grain-boundary layer is formed.
Journal ArticleDOI
Polycrystalline strengthening
TL;DR: In this paper, the strength of polycrystalline specimens can be related to interaction phenomena taking place during elastic and plastic deformation, such as macroscopic and microscopic strain accommodation processes required to maintain strain continuity across the grain boundaries.
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