Elatresh et al. (1) (ECAHDB) claim that the lowtemperature martensitic structure of lithium “is not the heretofore assigned 9R.” This is based on comparing results of Fermi surface calculations to de Haas–van Alphen (dHvA) data from Springford and coworkers (2, 3). We note that Springford’s group took extensive steps to preserve the body-centered-cubic (bcc) structure and to avoid the temperatu...

With the rapid development of low-carbon high strength steel, higher requirements are put forward for matching welding consumables. The deposited metals with 0.62–2.32% Cu addition was prepared by tungsten inert gas via metal cored wire. effect element on microstructure and mechanical properties were investigated. multiphase consists bainite, martensite, residual austenite, martensite-austenite...

A new combination of factors enhancing the stabilization austenite, including pre-existed austenite among quenched martensite, prior deformation, and partitioning at high temperatures is employed to create a multi-component refined microstructure in medium Mn steel (Fe–4Mn–0.31C–2Ni–0.5Al–0.2Mo, wt.%). The evolution phase fraction during processing are systematically investigated using various ...

The effects of partial replacement Si by Al on the microstructure, tensile properties, and Charpy impact toughness were investigated using 0.2%C-Si/Al-Mn-Cr-B TRIP-aided martensitic steels to promote application galvanized third-generation ultrahigh- high-strength steels. was related microstructural mechanical properties. decreased volume fraction retained austenite increased stability, accompa...

In the current study, the recrystallization behavior of 75% cold-rolled Fe-22Mn-10Al-1.4C steel during annealing at 750, 770, 790, 810, and 830°C was studied. X-ray diffraction patterns and optical microscopy were used to characterize microstructures. The Vickers Micro-hardness test was used to characterize recrystallization kinetics during annealing. Johnson-Mehl-Avrami-Kolmogorov (JMAK) model...

An extra low carbon martensitic stainless steel with 16% ultrafine grained metastable reverted austenite was subjected to uniaxial tensile testing and investigated in-situ energy-dispersive synchrotron X-ray diffraction (XRD) electron backscatter (EBSD) reveal the complex interplay between stress, strain transformation. In-situ XRD demonstrated that, upon surpassing yield strength, fraction of ...

The effect of long-term ageing (1000, 2000, and 3000 h) at 475 °C on mechanical properties, microstructure, substructure CUSTOM 465® maraging stainless steel was studied. additional precipitation nanometric particles ?-Ni3Ti phase in partly recovered lath martensite decomposition the BCC solid solution accompanied by formation Cr-rich ?’particles were identified. fraction reverted austenite fin...

Abstract: Hardfacing is one of the most useful and economical ways to increase the service life of components subjected to abrasive wear. Iron based hardfacing alloys have long been considered as candidate coatings for wear-resistant applications in industry. In the present work two layer of Fe-34Cr-4.5C%wt hardfacing alloy was deposited on ASTM A36 carbon steel plates by SMAW method. The m...