An atom-probe tomographic study of the temporal evolution of the nanostructure of Fe–Cu based high-strength low-carbon steels

2006 ◽  
Vol 55 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Dieter Isheim ◽  
R. Prakash Kolli ◽  
Morris E. Fine ◽  
David N. Seidman
Keyword(s):  
Temporal Evolution ◽  
High Strength ◽  
Atom Probe ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels

scholarly journals Thermal Diffusivity of Traditional and Innovative Sheet Steels

2010 ◽  
Vol 297-301 ◽  
pp. 893-898
Author(s):  
Elena Campagnoli ◽  
Paolo Matteis ◽  
Giovanni M.M. Mortarino ◽  
Giorgio Scavino
Keyword(s):  
Thermal Diffusivity ◽  
Deep Drawing ◽  
Process Model ◽  
Twip Steel ◽  
Welding Process ◽  
High Strength Steels ◽  
High Strength ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels

The low carbon steels, used for the production of car bodies by deep drawing, are gradually substituted by high strength steels for vehicle weight reduction. The drawn car body components are joined by welding and the welded points undergo a reduction of the local tensile strength. In developing an accurate welding process model, able to optimized process parameters and to predict the final local microstructure, a significant improvement can be given by the knowledge of the welded steels thermal diffusivity at different temperatures. The laser-flash method has been used to compare the thermal diffusivity of two traditional deep drawing steels, two high strength steels already in common usage, i.e. a Dual Phase (DP) steel and a TRansformation Induced Plasticity (TRIP) steel, and one experimental high-Mn austenitic TWIP (Twinning Induced Plasticity) steel. The low carbon steels, at low temperatures, have a thermal diffusivity that is 4-5 times larger than the TWIP steel. Their thermal diffusivity decreases by increasing temperature while the TWIP steel shows an opposite behaviour, albeit with a lesser slope, so that above 700°C the TWIP thermal diffusivity is larger. The different behaviour of the TWIP steel in respect to the ferritic deep drawing steels arises from its non ferro-magnetic austenitic structure. The DP and TRIP steels show intermediate values, their diffusivity being lower than that of the traditional deep drawing steels; this latter fact probably arises from their higher alloy content and more complex microstructure.

Microstructural aspects of the fracture toughness and fatigue resistance of high-strength low-carbon steels

1992 ◽  
Vol 27 (5) ◽  
pp. 513-515 ◽  
Author(s):  
B. M. Bronfin ◽  
A. A. Eme'yanov ◽  
I. Yu. Pyshmintsev
Keyword(s):  
Fracture Toughness ◽  
Fatigue Resistance ◽  
High Strength ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels

On the Yoshida Buckling Test of High Strength and Coated Low Carbon Steels

CIRP Annals ◽  
1987 ◽  
Vol 36 (1) ◽  
pp. 185-189 ◽  
Author(s):  
A.G. Mamalis ◽  
L.P. Hatzikonstantis ◽  
Z. Marciniak
Keyword(s):  
High Strength ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Buckling Test

EFFECT OF NANOSIZED PHASE PRECIPITATES ON CORROSION RESISTANCE OF COLD-ROLLED HIGH-STRENGTH LOW-CARBON STEELS MICROALLOYED WITH NIOBIUM

Metallurg ◽  
2021 ◽  
pp. 35-42
Author(s):  
I.G. Rodionova ◽  
A.V. Amezhnov ◽  
N.A. Arutyunyan ◽  
Yu.S. Gladchenkova ◽  
I.A. Vasechkina ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
High Strength ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Cold Rolled

Atom Probe Compositional Analysis of Interphase Precipitated Nano-Sized Alloy Carbide in Multiple Microalloyed Low-Carbon Steels

2018 ◽  
Vol 25 (2) ◽  
pp. 447-453 ◽  
Author(s):  
Yongjie Zhang ◽  
Goro Miyamoto ◽  
Tadashi Furuhara
Keyword(s):  
Early Stage ◽  
Three Dimensional ◽  
Compositional Analysis ◽  
Atom Probe ◽  
Carbon Steels ◽  
Alloying Elements ◽  
Isothermal Treatment ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Alloy Carbide

AbstractThe composition of nano-sized alloy carbides formed by interphase precipitation in V–Nb and V–Ti multiple microalloyed low-carbon steels is analyzed by using three-dimensional atom probe. Carbide-forming alloying elements including V, Nb, and Ti, are simultaneously precipitated from the early stage of isothermal treatment, whose atoms are uniformly distributed in the carbide particles, even after prolonged holding. Cluster analysis by the maximum separation method, with parameters optimized using different methods, is carried out to extract alloy carbides from matrix. The composition of alloy carbides evaluated by site fraction of substitutional carbide-forming alloying elements indicates that at the early stage of their formation, Nb and Ti are more strongly enriched than V.

Low-Carbon Steels

2015 ◽  
pp. 233-275
Keyword(s):  
High Strength ◽  
Carbon Steels ◽  
Interstitial Free ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Trip Steels ◽  
Hsla Steels ◽  
Twip Steels ◽  
Cold Rolled ◽  
Hot Rolled

This chapter discusses various alloying and processing approaches to increase the strength of low-carbon steels. It describes hot-rolled low-carbon steels, cold-rolled and annealed low-carbon steels, interstitial-free or ultra-low carbon steels, high-strength, low-alloy (HSLA) steels, dual-phase (DP) steels, transformation-induced plasticity (TRIP) steels, and martensitic low-carbon steels. It also discusses twinning-induced plasticity (TWIP) steels along with quenched and partitioned (Q&P) steels.

Plain low-carbon steels as substitutes for certain high-strength alloy steels

1960 ◽  
Vol 2 (12) ◽  
pp. 641-645
Author(s):  
M. E. Blanter ◽  
K. P. Koryagin ◽  
O. V. Martishin
Keyword(s):  
High Strength ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Alloy Steels ◽  
Strength Alloy
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