Results 181 to 190 of about 5,251 (214)
Some of the next articles are maybe not open access.
Influence of microalloy type and content on induced precipitation kinetics in microalloyed steels
Steel Research, 1996Using torsion tests, and applying the back extrapolation method, the statically recrystallized fraction has been determined for low carbon microalloyed steels with different V, Nb and Ti contents, at different temperatures and an equivalent strain of 0.20%.
Sebastián F. Medina, Alberto Quispe
openaire +1 more source
Microalloyed steel for railroad wheels
Steel in Translation, 2008Radical improvement in the reliability and longevity of railroad wheels at high train speeds and loads depends primarily on improvements in the properties of wheel steel: increased static and cyclic strength, high- and low temperature strength, and wear resistance, and low likelihood of the formation of martensitic surface zones.
S. Ya. Shipitsyn +4 more
openaire +1 more source
Plasma nitriding of microalloyed steel
Surface and Coatings Technology, 1995Abstract 3icroalloyed or high strength low alloy (HSLA) steels are carbon-manganese steels containing small amounts of Nb, V or Ti. The excellent mechanical properties of these alloys, particularly high yield strength, usually obviate the need for expensive quench and tempering operations.
F. Mahboubi +4 more
openaire +1 more source
Materials Science Forum, 1998
Microalloyed forging steels have been developed to improve the competitiveness of wrought steel components, especially in the automotive sector, by achieving the desired properties in the as-forged condition, thus eliminating the need to subsequently heat treat, straighten and stress relieve the previously specified low alloy steels.
openaire +1 more source
Microalloyed forging steels have been developed to improve the competitiveness of wrought steel components, especially in the automotive sector, by achieving the desired properties in the as-forged condition, thus eliminating the need to subsequently heat treat, straighten and stress relieve the previously specified low alloy steels.
openaire +1 more source
Microalloyed Steel Bars and Forgings
JOM, 1986This paper examines microalloyed steels—steels which develop their properties in the as-received condition without requiring further heat treatment, such as quenching and tempering. Microalloyed steel bars and forgings offer a clear cut potential for cost reduction and energy savings.
R. S. Cline +2 more
openaire +1 more source
Microalloy steels – the beginning
Materials Science and Technology, 2009Although steels containing small amounts of vanadium or titanium had long been available, the rapid development and exploitation of microalloy steels was initiated by the recognition of the advantages of adding a small amount of niobium to C–Mn steels.
openaire +1 more source
Microalloyed aluminum for cryogenic conductors
JOM, 1995The addition of low levels of various elements can enhance the strength of high-purity aluminum with minimal effects on resistivity. The base aluminum is 99.9998% pure with a residual resistivity ratio (RRR = ρ273K/ρ42K) of 10,500 and the microalloy levels range from 2 atomic ppm up to 170 atomic ppm (5–90 weight ppm).
L. Clark McDonald +2 more
openaire +1 more source
Microalloying of titanium alloys
Metal Science and Heat Treatment, 19791. Microalloying with zirconium, hafnium, and REM improves the mechanical properties of α+β and β alloys due to grain refining, lower concentration of impurities in grain boundaries, and more dispersed and even decomposition of metastable phases during aging, which is associated with the increasingly negative values of the heat of formation of ...
openaire +1 more source
Fatigue of Microalloyed Bar Steels
SAE Technical Paper Series, 2000<div class="htmlview paragraph">The fatigue behavior of five microalloyed steels, processed with hardnesses between 25-28 HRC containing microstructures ranging from precipitation-hardened ferrite-pearlite to bainite, were evaluated in both low cycle (strain controlled) and high cycle (stress controlled fatigue.
John A. Johnson +2 more
openaire +1 more source
Exafs investigation of microalloyed steel
Scripta Metallurgica, 1984Pour ameliorer la composition et la fabrication des aciers microallies on a besoin de methodes precises pour mesurer les quantites d'elements de microalliage presents en solution solide ou sous forme de fins precipites et pour determiner la structure de ces precipites.
G.P. Huffman +4 more
openaire +1 more source