heat treatment high cr cast irons patent

  • High Boron Cast Iron: Part Two | Total Materia Blog

    High Boron Cast Iron: Part Two | Total Materia Blog

    High Cr white cast irons are an important class of wear resistant materials currently used in a variety of applications that requires high wear resistance and reasonable toughness. The effect of different tempering temperatures on the microstructure and mechanical properties of high boron white cast iron after air quenching was studied in the ...

  • Heat Treatment of Cast Irons Heat Treat

    Heat Treatment of Cast Irons Heat Treat

    plastics. Cast irons are based on the FeC system, and the solidstate transformations on which cast iron heat treatments are based are similar to those applied to steels. Heat Treatment of Cast Irons Daniel H. Herring, The HERRING GROUP, Inc., Elmhurst, Ill. Diamond Platinum Rhenium Palladium Germanium Beryllium Indium Hafnium Silver Cobalt ...

  • NANOINDENTATION AND MICROSTRUCTURE ANALYSIS OF .

    NANOINDENTATION AND MICROSTRUCTURE ANALYSIS OF .

    annealing heat treatment, the matrix is transformed to pearlite with secondary carbides. In the hardened sample, the matrix consists of martensite and secondary carbides. However, no changes in the primary carbides and eutectic carbides were observed (Fig. 2). Fig. 2. Microstructures of high chromium white cast irons (higher CSi contents)

  • Heat Treatment of White Cast Irons | Metallurgy

    Heat Treatment of White Cast Irons | Metallurgy

    Highalloy white cast irons normally have austenite matrix in ascast state, but is changed to hard martensite by heattreatment. Carbon content is high when maximum abrasionresistance is desired, but is on lower side, when repeated impact loading is of primary importance in service.

  • Microstructural Modifications of AsCast HighChromium ...

    Microstructural Modifications of AsCast HighChromium ...

    The initial ascast microstructure of a highchromium (% C, % Cr) white cast iron consisting of primary austenitic dendrites and a eutectic mixture of M7C3carbides/austenite was extensively...

  • Solidification structure and abrasion resistance of high ...

    Solidification structure and abrasion resistance of high ...

    The hardness, microstructure, abrasive wear resistance and mechanical properties were evaluated for four highchromiummolybdenum irons in the ascast condition and after various subcritical heat treatments. After pouring, the irons were cooled to simulate the mold cooling rates in either 100 or 150mm (4 or 6in.) thick plates.

  • Chapter 13: Heat Treatment of Steels and Cast Irons ...

    Chapter 13: Heat Treatment of Steels and Cast Irons ...

    Start studying Chapter 13: Heat Treatment of Steels and Cast Irons. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

  • Microstructural Characteristics and Mechanical Properties ...

    Microstructural Characteristics and Mechanical Properties ...

    and retained austenite. Destabilization heat treatment of high Cr cast irons normally consists of heating to a high temperature or austenitizing, air quenching and tempering [7]. The successful heat treatment produces austenite destabilization by precipitation of fine secondary M 7 C 3 carbides within the austenite matrix.

  • Effect of Alloying Elements on Heat Treatment Behavior of ...

    Effect of Alloying Elements on Heat Treatment Behavior of ...

    Keywords: high chromium cast iron, alloying element, heat treatment, hardness, volume fraction of retained austenite 1. Introduction High chromium cast irons, which contain 12 to 30mass%Cr and to %C are well known as abrasion wear resistant materials. It is said that their microstructures consisting of hard eutectic carbides of (Cr,Fe) 7C 3 or M 7C

  • HEAT TREATMENT OF CAST IRON AND ITS EFFECTS

    HEAT TREATMENT OF CAST IRON AND ITS EFFECTS

    HEAT TREATMENT OF CAST IRON. Nodular cast irons (or ductile, or spheroidal graphite iron) are primarily heat treated to create matrix microstructures and associated mechanical properties not readily obtained in the ascast condition.

  • Ferritic highsilicon cast irons Google Patents

    Ferritic highsilicon cast irons Google Patents

    Lower amounts of spheroidizers and inoculants are used for the MG irons than SG irons. A small amount of ferrousphosphorus was added into ladle with a mixture inoculant for making the SG Cralloyed cast irons with Pdoped. For the heat treatment of Cr alloyed cast irons, annealing treatment is employed.

  • The phasestructural modification of highchromium cast ...

    The phasestructural modification of highchromium cast ...

    highCr cast irons is largely dependent on the method of hardening treatments. The bulk heat treatment is traditionally offered for these alloys. Surface treatment using concentrated heat sources is almost not applied for strengthening of highCr cast iron, so this treatment remains as an important reserve in improving of their wear resistance. In this work the plasma jet heating was used to improve the wear

  • Effect of titanium on the ascast microstructure of ...

    Effect of titanium on the ascast microstructure of ...

    The effect of titanium on the ascast microstructure of a hypereutectic highCr cast iron containing wt.% carbon and wt.% chromium was investigated. With the increase of titanium concentration, the primary M7C3 carbides were refined and the volume fraction of all carbides (primary and eutectic carbide) was decreased gradually.

  • Microstructure and properties of high chromium cast irons ...

    Microstructure and properties of high chromium cast irons ...

    Different combinations of critical and subcritical heat treatments variously modify the initial as cast microstructure of high chromium white cast irons leading to secondary carbide precipitation ...

  • (PDF) Introduction to Steels and Cast Irons | Javier ...

    (PDF) Introduction to Steels and Cast Irons | Javier ...

    Metallographer's Guide: Irons and Steels (#06040G) CHAPTER 1 Introduction to Steels and Cast Irons STEELS AND CAST IRONS are basically alloys of iron and The easiest way to classify steels is by their chemical compo various other elements in the periodic table.

  • Highchromium (2234 per cent) Cast Iron Alloys and Their ...

    Highchromium (2234 per cent) Cast Iron Alloys and Their ...

    Cr initiate formation of an oxideimpenetrable layer on the surface of cast pieces, which adhere very well to the metal. Due to this, chrome irons are resistant to the action of heat and various corroding media7. Above 16 per cent Cr, an oxide layer type , forms on the iron surface, which strongly increases