ISSN:
1573-8973
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. On heating of quenched low-carbon low-alloy steel 10G2S1D at temperatures somewhat above Ac1 a finely dispersed mixture of fragmented ferrite and austenite is formed, which is resistant on cooling in air and is limited by the size of former martensite needles. 2. The formation of thermally stable austenite is due to stabilization as the result of redistribution of carbon, nitrogen, manganese, and other elements between the α- and γ-solid solutions. In this case the ferritic matrix is refined due to the diffusion of impurity atoms into local volumes of austenite. 3. The redistribution process of atoms of impurity and alloying elements controls the formation of stable austenite. The formation of austenite resistant during cooling in air requires holding at 720–740°C for at least 20 min, which excludes its formation in the heat-affected zone during welding.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00652058
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