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Pearlite
About: Pearlite is a research topic. Over the lifetime, 6028 publications have been published within this topic receiving 65695 citations.
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TL;DR: The effect of titanium oxide nanopowder on the microstructure of a plain carbon steel was studied in this article, showing that after inoculation, the volume fraction of ferrite increased considerably.
57 citations
TL;DR: In this paper, a two-dimensional model for the formation of austenite from lamellar pearlite in steel has been developed, where the main assumption of the model is the condition of local equilibrium at the interfaces, including the curvature contribution and mechanical equilibrium of surface tensions at the triple junction where the ferrite, austenites and cementite phases meet.
57 citations
31 May 2000-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: The effects of silicon and titanium on microstructure and mechanical properties of vanadium microalloyed medium carbon steels heat treated after rolling to simulate the thermal cycle of hot forging have been determined using room temperature tensile tests, impact tests, optical microscopy and scanning electron microscopy (SEM).
Abstract: The effects of silicon (053 and 105 wt%) and titanium (<0002 and 0022 wt%) on microstructure and mechanical properties of vanadium microalloyed medium carbon steels heat treated after rolling to simulate the thermal cycle of hot forging have been determined using room temperature tensile tests, impact tests, optical microscopy and scanning electron microscopy (SEM) Silicon was found to increase strength values whilst titanium had a strong refining action on prior austenite grain size Room temperature Charpy ‘U’ notch impact energies were all on the lower shelf; ductile–brittle transition temperatures, determined from fracture appearance in Hounsfield impact tests, ranged from 100 to 145°C, scaling with material strength Initiation in the Charpy tests was by microcracking of coarse (Ti,V)(C,N)-containing single or multi-phase inclusions except in the low strength, titanium-free case when the absence of a completely continuous grain boundary ferrite layer allowed matrix microstructure initiation by interfacing pearlite colonies to occur
56 citations
15 Jul 2008-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the authors evaluated the variations in the as-cast mechanical properties of low-carbon steels with and without vanadium and niobium and showed that good combinations of strength and ductility can be achieved by microalloying additions.
Abstract: Tensile and room temperature Charpy V-notch impact tests along with microstructural studies were used to evaluate the variations in the as-cast mechanical properties of low-carbon steels with and without vanadium and niobium. Tensile test results indicate that good combinations of strength and ductility can be achieved by microalloying additions. While the yield strength and UTS increase up to respectively 370–380 and 540–580 MPa in the microalloyed heats, their total elongation range from 20 to 25%. TEM studies revealed that random and interphase fine-scale microalloy precipitates play a major role in the strengthening of the microalloyed heats. On the other hand, microalloying additions significantly decreased the impact energy and led to the dominance of cleavage facets on the fracture surfaces. It seems that heterogeneous nucleation of microalloy carbonitrides on dislocations along with coarse ferrite grains and pearlite colonies trigger the brittle fracture in the microalloyed heats.
56 citations
TL;DR: In this article, the microstructure-mechanical property-wear performance of five commercial grinding mill ball types in laboratory scale milling experiments is investigated. And the results obtained show a general increase in hardness and wear resistance of the grinding media with an increase in carbon content reflecting a transition from a wholly pearlitic structure in steels to one dominated by hard carbides in a pearlite and retained austenite matrix in cast irons.
56 citations