1-20 of 51 Search Results for

eutectoid transformation

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006228
EISBN: 978-1-62708-163-4
... Abstract Eutectoid and peritectoid transformations are classified as solid-state invariant transformations. This article focuses primarily on the structures from eutectoid transformations with emphasis on the classic iron-carbon system of steel. It reviews peritectoid phase equilibria that are...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003836
EISBN: 978-1-62708-183-2
... arrow labeled “c” in Fig. 1 , is a relatively rare case in which the transformation from the glass phase to a crystalline phase occurs without a change in composition. Eutectoid crystallization occurs when two crystalline phases of substantially different compositions grow simultaneously within the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003195
EISBN: 978-1-62708-199-3
... suppressed or limited to a very short range. Bainite is a eutectoid decomposition that is a mixture of ferrite and cementite. Martensite, the hardest constituent, forms during severe quenches from supersaturated austenite by a shear transformation. Its hardness increases monotonically with carbon content up...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006250
EISBN: 978-1-62708-169-6
... growth. The article also describes the various types of solid-state transformations such as isothermal transformation and athermal transformation, resulting from the heat treatment of nonferrous alloys. It provides information on the homogenization of chemical composition within a cast structure...
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006221
EISBN: 978-1-62708-163-4
...: Eutectic points at a specific composition and temperature, where the liquid phase coexists with two different solid phases (three phases total in equilibrium) Eutectoid points at a specific composition and temperature, where three different solid phases can coexist in equilibrium (three phases total in...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005967
EISBN: 978-1-62708-166-5
... is approximately 0.05 mm/mm (0.002 in./in.) at 0.25% carbon and 0.18 mm/mm (0.007 in./in.) at 1.2% carbon ( Ref 6 ). The fractional increase in size when austenite is converted to martensite is approximately 0.36 mm/mm (0.014 in./in.) for eutectoid compositions. These examples illustrate the effect...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006274
EISBN: 978-1-62708-169-6
... Abstract This article describes the different types of precipitation and transformation processes and their effects that can occur during heat treatment of various nonferrous alloys. The nonferrous alloys are aluminum alloys, copper alloys, magnesium alloys, nickel alloys, titanium alloys...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003149
EISBN: 978-1-62708-199-3
... unalloyed grades, the Zircaloys are quite similar to unalloyed zirconium in metallurgical behavior. The only other zirconium alloy that has significant commercial importance is Zr-2.5Nb. In zirconium, niobium is a mild β stabilizer; a eutectoid reaction is induced when the niobium content exceeds about...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003160
EISBN: 978-1-62708-199-3
... transformation temperatures of both Cu-Zn-Al and Cu-Al-Ni alloys and shifts the eutectoid to higher aluminum content. It often replaces aluminum for better ductility. Elements such as boron, cerium, cobalt, iron, titanium, vanadium, and zirconium are also added for grain refinement. Compositions of the Cu-Zn-Al...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003140
EISBN: 978-1-62708-199-3
... β isomorphous (i.e., have similar phase relations) with bcc titanium. Titanium does not form intermetallic compounds with the β isomorphous elements. Eutectoid systems are formed with chromium, iron, copper, nickel, palladium, cobalt, manganese, and certain other transition metals. These elements...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003995
EISBN: 978-1-62708-185-6
... carbon level, and considerable knowledge has been generated concerning TMP of steels with carbon levels as high as the eutectoid composition ( Ref 2 ). For example, the development of microalloyed forging steels has centered around grades containing 0.30 to 0.50% C (see the article “Forging of Carbon...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006270
EISBN: 978-1-62708-169-6
... aluminum and tin additions. Source: Ref 7 Alpha stabilizers are balanced by the addition of beta stabilizers to produce a mixture of alpha and beta phases. Examples of isomorphous beta stabilizers include vanadium, molybdenum, and niobium. Iron and chromium are examples of eutectoid-forming beta...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006283
EISBN: 978-1-62708-169-6
... the effects of alloying elements on alpha/beta transformation. The article also discusses the heat treating procedures, and the furnaces used for heat treating titanium and titanium alloys. aging alloying differential thermal analysis method flattening heat treatment heat-treating furnaces...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006253
EISBN: 978-1-62708-169-6
... molybdenum, result in stability of the beta phase at lower temperatures. There are two types of beta stabilizers: Isomorphous beta stabilizers that form binary systems ( Fig. 2b ) Beta stabilizers that favor formation of a beta-phase eutectoid ( Fig. 2c ) Neutral alloying elements include tin...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003111
EISBN: 978-1-62708-199-3
... 4.5 to 8% improve high-temperature properties by raising the eutectoid transformation and by reducing the rates of scaling and growth. Additions of 14 to 17% Si (often accompanied by addition of about 5% Cr and 1% Mo) yield cast iron that is very resistant to corrosive acids, although resistance...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005332
EISBN: 978-1-62708-187-0
...-temperature β phase should transform to α, but because the transformation rate is too slow, alloys containing 8 to 9.4% Al eventually remain as a two-phase material. In alloys containing more than 9.4% Al, the β phase undergoes a eutectoid transformation, if cooled slowly in the region of 900 to 565 °C (1650...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006281
EISBN: 978-1-62708-169-6
..., eutectic, eutectoid reactions) taking place at a constant temperature (if any) along with the presence of different phases at different temperatures. It is also useful to note the difference between the atomic weight of copper and that of tin, aluminum, silicon, and beryllium. Tin has a higher atomic...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006263
EISBN: 978-1-62708-169-6
... boundaries below the eutectoid temperature. This is illustrated in Fig. 3 , where the β phase transforms into α and an intermetallic compound designated as gamma (γ) (e.g., TiCr 2 , Ti 2 Ni, Ti 2 Cu). Fig. 3 Beta transformation in a eutectoid system. Phase relationships can be predicted by...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003246
EISBN: 978-1-62708-199-3
.... Figure 23 shows the carburized surface of a low-carbon steel. At the extreme surface, the carbon content is above the eutectoid carbon content and a grain-boundary cementite layer is observed. Beneath this zone, the structure is fully pearlitic. At still greater depths, the amount of pearlite decreases...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003085
EISBN: 978-1-62708-199-3
... liquid and solid) Eutectoid (involves solid only) Peritectic (involves liquid and solid) Peritectoid (involves solid only) Fig. 7 Hypothetical binary phase diagram showing intermediate phases formed by various invariant reactions and a polymorphic transformation...