Results 81 to 90 of about 33,276 (223)

Effect of Microstructure on Stress Dependence of Transformation Induced Plasticity in TRIP800 Low-alloy Multiphase Steels

open access: yesIranian Journal of Materials Science and Engineering, 2020
An experimental–numerical methodology was used in order to study the microstructural effects on stress state dependency of martensitic transformation kinetics in two different TRIP800 low alloy multiphase steels.
F. Hosseinabadi   +3 more
doaj  

Degenerate Structure of Transformation Twins and Estimation of Dislocation Density in Martensite Crystals [PDF]

open access: yes, 2019
In the dynamic theory of martensitic transformations, the wave mechanism of controlling martensite crystal growth is determined by the superposition of wave beams of quasi-longitudinal (or longitudinal) waves carrying the "tensile-compression ...
Chashchina, V. G.   +2 more
core  

Finite Size‐Effects in Martensite Microstructure of Magnetic Shape Memory Films

open access: yesSmall, EarlyView.
Magnetic shape memory alloys are a promising multifunctional material system for integration into microsystems. Their multifunctionality arises from the coexistence of ferroelasticity and ferromagnetism. While size‐effects in ferromagnetic microstructure are well understood, corresponding experiments on the ferroelastic microstructure are sparse.
Satyakam Kar   +4 more
wiley   +1 more source

Influence of Steel Recycling on Phase Transformation in Medium‐Manganese Third‐Generation Advanced High‐Strength Steels

open access: yessteel research international, EarlyView.
On the pathway to climate‐neutral steel production, recycling fractions will necessarily increase over time. Since alloying elements will enrich progressively, as they cannot be removed economically from the melt, processes need to be adjusted.
Anindita Chakraborty   +3 more
wiley   +1 more source

Recycling‐Induced Copper Contamination of a 42CrMo4 Quench and Tempering Steel—Scaling and Susceptibility to Hot Shortness

open access: yessteel research international, EarlyView.
In this study, the susceptibility to copper‐induced hot shortness of the alloy 42CrMo4 is investigated by different hot tensile tests, as well as by a detailed analysis of the formed oxidation products. While an enrichment of metallic copper and a penetration of the grain boundaries are observed, no critical reduction of the tensile test properties can
Alexander Gramlich   +6 more
wiley   +1 more source

Magnetic interactions in the Martensitic phase of Mn rich Ni-Mn-In shape memory alloys

open access: yes, 2013
The magnetic properties of Mn$_{2}$Ni$_{(1+x)}$In$_{(1-x)}$ ($x$ = 0.5, 0.6, 0.7) and Mn$_{(2-y)}$Ni$_{(1.6+y)}$In$_{0.4}$ ($y$ = -0.08, -0.04, 0.04, 0.08) shape memory alloys have been studied.
daSilva, C. A.   +5 more
core   +1 more source

Alteration of Phase Transformation Behavior and Prior Austenite Grain Structure Due to Elevated Tramp Element Concentrations in a Hypoeutectoid Steel

open access: yessteel research international, EarlyView.
The phase transformation behavior of a hypoeutectoid steel is studied in comparison with alloys containing higher concentrations of tramp elements, simulating high recycling rates. The examination of microstructures reveals that the tramp elements facilitate the formation of displacive phases along with retained austenite.
Lukas Hatzenbichler   +7 more
wiley   +1 more source

Crystallography and ageing effect associated with thermoelastic martensitic transformations [PDF]

open access: yes, 1996
Martensitic transformation means the first-order diffusionless phase transformation in solids. Originally, a particular microstructure observed in quenched steels was called "martensite", in recognition of the well-known German metallurgist A.
Murakami Yasukazu, 村上 恭和
core  

Entropy change at the martensitic transformation in ferromagnetic shape memory alloys Ni_{2+x}Mn_{1-x}Ga

open access: yes, 2003
The entropy change $\Delta S$ between the high-temperature cubic phase and the low-temperature tetragonally-based martensitic phase of Ni$_{2+x}$Mn$_{1-x}$Ga ($x = 0 - 0.20$) alloys was studied.
K. Oikawa   +8 more
core   +1 more source

Influence of Higher Tramp Element Level on the Weldability of Automotive Steels

open access: yessteel research international, EarlyView.
The use of green recycled steels is constantly expanding in the automotive industry. The increase in tramp elements resulting from the recycling of steel is problematic. Tramp elements can lead to a negative influence on the weldability. To understand the influence, the welding properties of three green steels are characterized. The potential limits of
Elias Gebhard Vogt   +6 more
wiley   +1 more source

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