Published in Metallurgical and Materials Transactions A
In sequel to our recent report,[1] we demonstrate in this article the effect of chemistry on nonisothermal tempering and softening behavior of dual-phase steels. The martensite morphology and tempered structure were analyzed using electron microscopy. Electron energy loss spectrometry and energy-dispersive X-ray spectroscopy were used for a composi...
Published in Metallurgical and Materials Transactions A
The effects of variations in free nitrogen content on the microstructure and room-temperature tensile properties of laboratory processed dual-phase (DP) sheet steels with a base composition (wt pct) of 0.1C-2.0Mn-0.2Mo-0.2Cr were evaluated. Systematic variations in aluminum and nitrogen content along with coiling temperature were used to create a r...
Published in Journal of Materials Science
Ti–5Al–5V–5Mo–3Cr (Ti-5553) sheets were welded using a Nd: YAG laser system and Ti–6Al–4V filler wire. The effect of joint gap on weld geometry, defects, microstructure, and hardness was investigated. Fully penetrated welds up to a joint gap of 0.5 mm were produced. The two main defects observed were porosity and underfill. The addition of filler w...
Published in Journal of Materials Science
Several new commercial advanced high-strength steels exhibit high strength and enhanced formability. These materials have the potential to affect cost and weight saving while improving performance. However, welding, by modifying the microstructure of the steel, has in general a detrimental effect on the mechanical properties of structural component...
Published in Journal of Materials Science
In this article, laser cladding process with a blown powder feeding was used to deposit nickel-based IN-625 superalloy, cobalt-based hardfacing Stellite 6 alloy and high-vanadium CPM 10V tool steel onto a similar or dissimilar base material, respectively, to investigate the development and controllability of process-induced residual stresses in the...
Published in Russian Metallurgy (Metally)
The effect of heat treatment and elastic stresses on the texture of maraging NiTi-steels is studied. The interruption of the decomposition of martensite at the early stages is shown to be accompanied by the γ → α transformation, which proceeds upon cooling from the aging temperature and under elastic (σ
Published in Metallurgical and Materials Transactions A
Two plain carbon steels with varying manganese content (0.87 wt pct and 1.63 wt pct) were refined to approximately 1 μm by large strain warm deformation and subsequently subjected to intercritical annealing to produce an ultrafine grained ferrite/martensite dual-phase steel. The influence of the Mn content on microstructure evolution is studied by ...
Published in Metallurgical and Materials Transactions A
The conventional continuous hot-dip galvanizing (GI) and galvannealing (GA) processes can be applied to untransformed austenite to produce Zn and Zn-alloy coated low-carbon ultra-high-strength martensitic steel provided specific alloying additions are made. The most suitable austenite decomposition behavior results from the combined addition of bor...
Published in Journal of Materials Science
In this work, TiC–Cr overlay formed by plasma transferred arc alloying was subjected to tempering treatment at 473, 673, and 873 K for 2 h, respectively. XRD was employed to investigate phase transformation, determine the austenite proportion and evaluate the crystallite size. Microstructure investigation by SEM and TEM, microhardness and fatigue t...
Published in Steel in Translation
