a heat treatment [1, 4], and the method of hardening of the iron‘s matrix under the local plastic strain [1, 5] Wear resistance and mechanical properties of high-chromium cast irons depend on a type, shape and number of carbides being found in their microstructure, on matrix’s characteristics within
Advances in Materials Science and Engineering - Hindawi
The variations of microstructure and mechanical properties of a high-chromium cast iron for rolls were studied from as-cast to the final heat treatments Results show that the as-cast microstructure of the HCCI consists of M7C3 carbide, M23C6 carbide, martensite matrix, and retained austenite The large dendritic M7C3 carbide surrounds the matrix, and the M23C6 carbide is mainly distributed in .
Metallurgical Aspects of HIGH- CHROMIUM WHITE IRONS
CLASSES OF HIGH-Cr IRONS Thechromium-molybdenumirons(classIIof ASTM A532)contain11 to23%Cr andup to 35% Mo and can be supplied either as-cast with an austenitic or austenitic-martensitic matrix, or heat treated with a martensitic matrix microstructure for maximum abrasion resistanceandtoughness
Heat Treating ASTM A532 | Chrome White Iron | Penticton ,
Jan 16, 2018· Case Study: Read this case study for a specific example of chrome white iron outperforming AR plate Microstructure Notes No article on heat treating ASTM A532 would be complete without taking a look at its microstructure The high level of chromium in high chrome white iron prevents the formation of graphite in the microstructure
Heat treatment effect on microstructure, hardness and wear ,
Heat treatment effect on microstructure, hardness and wear resistance of Cr26 white cast iron , LIU Yue, et al Blast liner with Cr26 high chromium cast iron heat treatment[J] Casting, 2010, 59(3): 308–311 , BENEDUCE F, MATSUMOTO M, et al Optimizing heat treatment and wear resistance of high chromium cast irons using computational .
Fe-19Cr-28C irons in the as-cast condition as compared to a chilled ductile cast iron by a ball-cratering test using SiC slurry and the 19Cr iron with a higher chromium content ex-hibitedthebestwearresistanceLessinformationcanbefound for the wear behaviour of high chromium cast irons in wet conditions with corrosive media Relative erosion .
Heat Treatment in High Chromium White Cast Iron Ti Alloy
The influence of heat treatment on microstructure and mechanical properties of high chromium white cast iron alloyed with titanium was investigated The austenitizing temperatures of 980°C and 1150°C for 1 hour each followed by tempering at 260°C for 2 hours have been performed and the effect of these treatments on wear resistance/impact toughness combination is reported
Analysis of the High Chromium Cast Iron Microstructure ,
different hardening temperatures on the properties of high chromium cast iron were compared The study led to systemize the literature data of the parameters of heat treatment of high chromium cast iron, and optimal conditions for heat treatment was proposed for ,
Heat treatment process of the high chrome cast iron ,
The hardness values of high chromium white cast iron after as-cast and heat treatment were measured and compared to study the effects of composition and heat treatment process on the hardness of the material Wear resistance is evaluated by the amount of wear under the same wear condition
High Chromium Cast Iron: Part One :: Total Materia Article
High chromium cast irons (HCCI’s) exhibit very good mechanical properties and offer benefits for a range of manufacturing applications With carefully controlled heat treatment the cast iron properties can be further influenced to yield higher strength and ductility depending on the desired application
Alloy data sheet high chrome white iron 25% | Penticton ,
Jan 13, 2016· ASTM A532 Class III Type A The 25% Cr alloy is the most common high chrome white iron poured at Penticton Foundry This alloy has great abrasion resistant properties especially against gouging, grinding and scratching 25% Cr material can be machined to meet tighter tolerances like those found in pump and piping type castings
Optimizing hardenability of high chromium white cast iron
High Cr white cast irons possess a combination of excel lent abrasion resistance and a reasonable degree of toughness The microstructure of high-Cr white cast irons consists of a composite of large primary and/or eutectic carbides in type M 7 C 3 (where M=Cr, Fe, Mo, Mn, etc) and a softer matrix The
These cast irons have acceptable properties as cast This eliminates the need for a costly heat treatment and makes them a cost effective alternative to other grinding materials Reduced levels of austenite formers, such as nickel and manganese, also minimize the retention of low temperature austenite - a potential cause of premature failur
Microstructural Characteristics and Mechanical Properties ,
Effect of destabilization heat treatment High chromium white cast irons must be heat treated to develop the full hardness and maximum wear resistance The destabilization (hardening) heat treatment is used with high Cr and Cr-Mo white cast irons to transform the as-cast austenitic
re-engineered High Chromium Steel rolls By introducing special alloying elements and heat treatments versus industry standard products, the Union Electric Åkers enhanced High Chromium Steel is even more suited to the working conditions in the roughing stands of hot strip mills High Chrome Steel Work Rolls, known for reliability and performance
Heat Treating of High-Alloy White Cast Irons | Heat ,
High-alloyed white cast irons are an important group of materials whose production must be considered separately from that of ordinary types of cast irons The metallic matrix supporting the carbide phase in the high-alloy white cast irons can be adjusted by alloy content and heat treatment to develop proper balance between resistance to .
end user This high value results from many factors, one of which is the control of microstructure and properties that can be achieved in the as-cast condition, enabling a high percentage of ferritic and pearlitic structure Heat treatment is a valuable and versatile tool for extending both the
Microstructural Modifications of As-Cast High-Chromium ,
Microstructural Modifications of As-Cast High-Chromium White Iron by Heat Treatment Authors; , The effect of each heat treatment on the hardness of the alloy was correlated with the attained microstructure , (2000) Fracture Toughness of High-Chromium White Irons: Influence of Cast Structure, J Mater Sci, 35, 2069–2077 CrossRef Google .
Heat Treatment of Cast Irons | 2018-12-12 | Industrial Heating
Dec 12, 2018· Common Heat Treatment for the Specific Cast-Iron Typ High-alloy (eg, high chromium, high nickel-chromium) white irons can be heat treated For example, nickel-chromium white-iron castings are given a stress-relief heat treatment because, properly made, they have an as-cast martensitic matrix structure
Heat Treating of High-Alloy White Irons :: Total Materia ,
High-alloy cast irons are an important group of materials whose production should be considered separately from that of the ordinary types of cast irons The producing foundries usually have the equipment needed to handle the heat treatment and other ,
Heat Treatment of High Alloy Graphite Irons | Cast Irons ,
Oxidation resistance is further increased with the addition of chromium up to 2% Such alloys have been used for high temperature applications such as furnace and stoker parts, burner nozzles, and heat treatment trays The high silicon-nodular irons find use in greatest tonnage
Wear resistance of high chromium white cast iron for coal ,
After destabilization treatment, the results show wear behavior differences in the II D alloy, as-cast and annealed 2 Bibliographic review 21 High-chromium white cast iron characteristics High-chromium white cast irons are ferrous alloys containing 11-30% Cr and 18-36% C along with variable amounts of molybdenum, manganese, copper and .
CN104195420A - High-chrome wear-resistant cast iron ,
The invention discloses a high-chrome wear-resistant cast iron material and a heat treatment method The high-chrome wear-resistant cast iron material is prepared from iron as a main raw material, and carbon, silicon, manganese, sulphur, phosphorus, chrome, molybdenum, nickel and copper as auxiliary materials in manners of melting and casting after preparation
Effect of Heat Treatment on Microstructure and Mechanical ,
wear performance of high chromium white cast iron Quenching, seeding and micro-alloying can, to a limited extent, increase the wear resistance, but this is best achieved by heat treatment in the solid state The methods for producing high chrome iron casting include double pour, continuous pour and centrifugal castings [1, 3]
plastics Cast irons are based on the Fe-C system, and the solid-state 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 .
Heat Treatment of High-Alloy White Cast Irons | Cast ,
The high-alloyed white irons are primarily used for abrasion-resistant applications and are readily cast into the parts needed in machinery for crushing, grinding, and handling of abrasive materials This article discusses three major groups of the high-alloy white cast irons: nickel-chromium white irons, chromium-molybdenum irons, and high .
heat treatment is thus offset by the graphite present The otherway of imparting strength to the grey iron is by way of changing the graphite morphology and thus malleable, ductile and high strength cast irons have been developed Malleable Iron Malleable cast irons are produced in two stages, first one involves