Journal ArticleDOI
Correlation between microstructural features and tensile properties in near-α titanium alloy IMI 834 processed in the α + β regime
TLDR
In this paper, the effect of heat treatment parameters, such as solution treatment temperature and cooling rate, on the microstructure and room temperature tensile properties of a near-α titanium alloy IMI 834 was systematically evaluated.Abstract:
The mechanical properties of titanium alloys are highly sensitive to the morphology, topology, and dimensions of the α and β phases present in the material. An attempt has been made here to systematically evaluate the effect of heat treatment parameters, that is, solution treatment temperature and cooling rate, on the microstructure and room temperature tensile properties of a near-α titanium alloy IMI 834. Seven important microstructural features that affect the mechanical properties of a near-α titanium alloy IMI 834 processed in the α + β regime were quantified and used to establish a direct microstructure-mechanical property correlation with the aid of artificial neural network. The established neural network has been used to evaluate and understand the effect of each individual microstructural feature on the tensile property of the material. The results obtained are presented and discussed here.read more
Citations
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Journal ArticleDOI
Microstructure evolution and a unified constitutive model for a Ti-55511 alloy deformed in β region
TL;DR: Based on the sensitivity of dislocation density to deformation conditions, a unified constitutive equation is established to describe the evolution of flow stress, grain size and dynamic recrystallization (DRX) fraction.
Journal ArticleDOI
Precipitation behaviors and orientation evolution mechanisms of α phases in Ti-55511 titanium alloy during heat treatment and subsequent hot deformation
Guo-Dong Pang,Yong-Cheng Lin,Yu-Qiang Jiang,Xiaoyong Zhang,Xin-Gang Liu,Yi-Wei Xiao,Kechao Zhou +6 more
TL;DR: In this paper, the precipitation orientation of α phases in a Ti-55511 alloy during the heat treatment and subsequent hot deformation is investigated, and it is observed that the β grains prominently influence the precipitation process.
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Damage characterization of heat-treated titanium bio-alloy (Ti-6Al-4V) based on micromechanical modeling
Shima Rastgordani,Ali Ch Darabi,Javad Kadkhodapour,Seyed Reza Hamzeloo,Mohammadreza Khoshbin,Siegfried Schmauder,Javad Mola +6 more
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Influence of Plasma Gas Flow Rate on the Mechanical and Microstructural Aspects of Plasma Arc Welded Titanium Alloy Joints
TL;DR: In this article , the effect and role of plasma gas flow rate on the formation of microstructure during plasma arc welding of Ti6Al4V titanium alloy were studied using microscopic observation, energy dispersive spectroscopic analysis, tensile tests and microhardness measurements.
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Quantitative characterization of lamellar α precipitation behavior of IMI834 Ti-alloy in isothermal and non-isothermal heat treatments
TL;DR: In this paper , the average width and volume fraction of the lamellar α phase under non-isothermal conditions were smaller than those under isothermal conditions, and the critical precipitation temperatures were reduced with increasing cooling rate.