Topic
Pearlite
About: Pearlite is a research topic. Over the lifetime, 6028 publications have been published within this topic receiving 65695 citations.
Papers published on a yearly basis
Papers
More filters
15 Sep 2005-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the authors investigated the relationship between mechanical properties and microstructural characteristics of pearlite using various heat treatments on a hypereutectoid steel and found that the strength was related primarily to the interlamellar spacing by a Hall-Petch type relationship, while the ductility was dependent also on prior-austenite grain size and pearlite colony size.
Abstract: The relationship between mechanical properties and microstructural characteristics of pearlite was investigated using various heat treatments on a hypereutectoid steel. The materials were reheated between 900 and 1200 °C and these microstructures were then subjected to isothermal transformation at temperatures of 550, 580 and 620 °C. For the hypereutectoid steel, the mean value of the interlamellar spacing was observed to increase with increasing reheat and transformation temperatures. Examination of the mechanical properties of the resulting pearlitic microstructures indicated that the strength was related primarily to the interlamellar spacing by a Hall–Petch type relationship, while the ductility was dependent also on the prior-austenite grain size and pearlite colony size.
161 citations
15 May 2000-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the effects of processing parameters such as cooling start temperature and cooling rates on the final microstructure and mechanical properties of a low carbon bainitic steel were studied.
Abstract: Controlled rolling followed by accelerated cooling was utilised in laboratory simulations to study the microstructure and mechanical properties of an HSLA low carbon bainitic steel. The effects of processing parameters, such as cooling start temperature and cooling rates, on the final microstructure and mechanical properties were studied. Optical microscopy and transmission electron microscopy were used to evaluate the complex microstructures consisting of polygonal ferrite, pearlite, bainite and martensite/retained austenite constituent. The use of the multiple regression analysis allowed establishment of the relationships between mechanical properties and accelerated cooling variables: cooling rates and cooling start temperatures.
161 citations
Book•
15 Mar 2004
TL;DR: The history of iron and steel can be traced from iron to steel, from ploughshares to swords and ploughshare-making as discussed by the authors, and from steel to steel.
Abstract: First Part The history of iron and steel - of swords and ploughshares.- 1 From iron to steel.- 2 Of swords and swordmaking.- 2 The Genesis of Microstructures.- 3 The principal phases in steels.- 4 The basic phase diagrams.- 5 The formation of solidification structures.- 6 Liquid/solid structural transformations.- 7 Grains, grain boundaries and interfaces.- 8 Diffusion.- 9 The decomposition of austenite.- 10 The pearlite transformation.- 11 The martensite transformation.- 12 The bainite transformation.- 13 Precipitation.- 3 Steels and cast irons.- 14 Steel Design.- 15 Solidification macrostructures.- 16 Macro- and microstructures of sintered powder products.- 17 Plain carbon and low alloy steels.- 18 Quench hardening steels.- 19 Stainless steels.- 20 Heat resisting steels and iron-containing superalloys.- 21 Cast irons.- 22 Appendices.- 23 References.- 24 Index.
156 citations
TL;DR: In this paper, a method for determining both the fraction ferrite and the fraction pearlite is presented, in which the temperature range of the transformation is divided into a ferrite-forming range and a pearlite-formation range.
Abstract: Dilatometry is a useful technique to obtain experimental data concerning transformation kinetics in ferrous alloys. This technique is commonly used in cooling experiments to study the austenite decomposition of hypo-eutectoid steel grades. In the standard analysis of the dilatation signal there are two factors that are normally neglected. During the pro-eutectoid ferrite formation the austenite enriches in carbon, resulting in a non-linear temperature dependence of the specific austenitic volume. Furthermore, the specific volume of the formed ferrite is considerably different from that of the formed pearlite. In total not taking into account these two effects can lead to an error in the determined fraction ferrite of up to 25%. A method is presented that takes into account the two above-mentioned factors. In order to determine both the fraction ferrite and the fraction pearlite, in the analysis the temperature range of the transformation is divided into a ferrite-formation range and a pearlite-formation range. Two possible criteria for this division are discussed, and it is shown that the choice does not have an essential influence on the results.
156 citations
TL;DR: A modification of the Avrami overall transformation kinetics theory as adapted by Cahn was described in this article for grain boundary nucleated phases. But this modification deals with the simultaneous occurrence of two or more transformations.
154 citations