Abstract: transformation temperature and different ferrite morphologies in one Nb-microalloyed (HSLA) steel has beeninvestigated. Three different austenite grain sizes were selected and cooled at two different cooling rates for obtainingaustenite to ferrite transformation temperature. Moreover, samples with specific austenite grain size have beenquenched, partially, for investigation on the mic...

The eddy current magnetic signature (EC-MS) method is a relatively new used to evaluate the residual stresses of ferromagnetic steels with higher sensitivity than other techniques. In this study, effects mechanical polishing and ferrite–pearlite structure on shape EC-MS signal were investigated in two experiments clarify effect compressive stress shape. first experiment, work-hardened layers sp...

This study was attempted to develop a process model, using the temperature values measured by the coupled infrared temperature measurement system (pyrometer and camera) correlated with the measured values of case depth hardness of the tool steel AISI S7 (hypoeutectoid steel) for the specified multi-pass laser heat treatment conditions (1000–2500 J). A number of heat treatment experiments by cha...

Steel foam offers potential advantages over aluminum foams and other metallic foams. The inherent strength of steel combined with the reduced density of foam presents an attractive material with greater strength and modulus than light alloy foams, greatly reduced density relative to solid steel, and efficient energy absorption. However, thus far there have been few reports describing efforts to...

This work investigates the microstructure and inclusions of a compacted graphite iron (CGI) alloyed by Ce La rare earth (RE) elements. In our study, alloying elemental distribution solute segregation were characterized methods secondary ion mass spectrometry (SIMS) three-dimensional atom probe (3DAP) with high sensitivity spatial resolution. RE sulfide, MgS, carbide, composite formed during sol...

In this study, the surface of industrial pure iron was treated with atmospheric-controlled induction heating fine particle peening (AIH-FPP) using mechanical coating (MC) particles carbon/steel obtained by mixing carbon powder and steel milling. The modification effect mechanism its were examined considered analyzing surface. Results showed that a modified layer in which elements diffused forme...

Abstract Austenite stabilization through carbon partitioning from martensite into austenite is an essential aspect of the quenching and (Q&P) process. Substitutional alloying elements are often included in chemical composition Q&P steels to further control microstructure development by inhibiting carbide precipitation (silicon) stabilize (manganese nickel). However, these can interfere ...