Effect of Ni content on the Hardenability of a Bainitic Steel for Processing of Plastics

In the Fe-Ni system, although ordered FeNi and ordered Ni3Fe are experimentally well established, direct evidence for ordered Fe3Ni is unconvincing. Little experimental data for Fe3Ni exists because diffusion is sluggish at temperatures below 400°C and because alloys containing less than 29 wt% Ni undergo a martensitic transformation at room temperature. Fe-Ni phases in iron meteorites were examined in this study because iron meteorites have cooled at slow rates of about 10°C/106 years, allowing phase transformations below 400°C to occur. One low temperature transformation product, called clear taenite 2 (CT2), was of particular interest because it contains less than 30 wtZ Ni and is not martensitic. Because CT2 is only a few microns in size, the structure and Ni content were determined through electron diffraction and x-ray microanalysis. A Philips EM400T operated at 120 kV, equipped with a Tracor Northern 2000 multichannel analyzer, was used.

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Modeling of mechanical behaviour of HSLA low carbon bainitic steel thermomechanically processed

Journal de Physique IV (Proceedings) ◽

10.1051/jp4:2003922 ◽

2003 ◽

Vol 112 ◽

pp. 449-452

Author(s):

D. B. Santos ◽

P. C.M. Rodrigues ◽

A. B. Cota

Keyword(s):

Mechanical Behaviour ◽

Bainitic Steel ◽

Low Carbon

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Synthesis and study the Structural and electrical and mechanical properties of High Temperature Superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ Substituted with nickel oxide for n=3

Ibn AL- Haitham Journal For Pure and Applied Science ◽

10.30526/31.3.2024 ◽

2018 ◽

Vol 31 (3) ◽

pp. 26 ◽

Cited By ~ 4

Author(s):

Laheeb. A. Mohammed ◽

Kareem. A. Jasim

Keyword(s):

Nickel Oxide ◽

High Temperature Superconductor ◽

Sintering Temperature ◽

Concentration Effects ◽

High Tc ◽

Xrd Diffraction ◽

Ni Content ◽

High Tc Phase ◽

Pure Phases ◽

Critical Temperature Tc

on this research is to study the effect of nickel oxide substitution on the pure phases superconductor Tl0.5Pb0.5Ba2Can-1Cun-xNixO2n+3-δ (n=3) where x=(0,0.2,0.4,0.6,0.8.and 1.0). The specimens in this work were prepared with used procedure of solid state reaction with sintering temperature 8500C for 24 h .we used technical (4-prob)to calculated and the critical temperature Tc . The results of the XRD diffraction analysis showed that the structure for pure and doped phases was tetragonal with phases high-Tc phase (1223),(1212) and low-Tc phase (1202) and add to the presence of some impure phase. It was noted the value a=b,c the parameter of the lattice increment with the increment of Ni content. The increment of (NiO) concentration effects electrical resistivity, dielectric constant and the hardness.

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INVAR M93

Alloy Digest ◽

10.31399/asm.ad.fe0143 ◽

2008 ◽

Vol 57 (1) ◽

Keyword(s):

Fracture Toughness ◽

Low Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Low Temperatures ◽

Bend Strength ◽

Temperature Performance ◽

Ni Content ◽

Precision Alloys ◽

Ni Alloy

Abstract Invar is an Fe-Ni alloy with 36% Ni content that exhibits the lowest expansion of known metals from very low temperatures up to approximately 230 deg C (445 deg F). Invar M93 is a cryogenic Invar with improved weldability. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear and bend strength as well as fracture toughness and fatigue. It also includes information on low temperature performance as well as forming and joining. Filing Code: FE-143. Producer or source: Metalimphy Precision Alloys.

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Crystallographic Orientation Dependence of Deformation-Induced Martensitic Transformation of 1.3 GPa-Class 0.6%C Bainitic Steel with Retained Austenite

SSRN Electronic Journal ◽

10.2139/ssrn.3692032 ◽

2020 ◽

Author(s):

Rintaro Ueji ◽

Akinobu Shibata ◽

Kohsaku Ushioda ◽

Yuji Kimura ◽

Takahito Ohmura ◽

...

Keyword(s):

Martensitic Transformation ◽

Crystallographic Orientation ◽

Retained Austenite ◽

Orientation Dependence ◽

Bainitic Steel

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Shaping Microstructure and Mechanical Properties of High-Carbon Bainitic Steel in Hot-Rolling and Long-Term Low-Temperature Annealing

Materials ◽

10.3390/ma14020384 ◽

2021 ◽

Vol 14 (2) ◽

pp. 384

Author(s):

Tomasz Dembiczak ◽

Marcin Knapiński

Keyword(s):

Mathematical Models ◽

Hot Rolling ◽

Constitutive Equations ◽

Rolling Process ◽

Bainitic Steel ◽

Compression Tests ◽

High Carbon ◽

Bainite Steel ◽

Dilatometric Studies

Based on the research results, coefficients in constitutive equations, describing the kinetics of dynamic, meta-dynamic, and static recrystallization in high-carbon bainitic steel during hot deformation were determined. The developed mathematical model takes into account the dependence of the changing kinetics in the structural size of the preliminary austenite grains, the value of strain, strain rate, temperature, and time. Physical simulations were carried out on rectangular specimens. Compression tests with a flat state of deformation were carried out using a Gleeble 3800. Based on dilatometric studies, coefficients were determined in constitutive equations, describing the grain growth of the austenite of high-carbon bainite steel under isothermal annealing conditions. The aim of the research was to verify the developed mathematical models in semi-industrial conditions during the hot-rolling process of high-carbon bainite steel. Analysis of the semi-industrial studies of the hot-rolling and long-term annealing process confirmed the correctness of the predicted mathematical models describing the microstructure evolution.

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