Theory of the Pearlite Reaction

The formation of pearlite in steels

“…8.19. Hillert was able to rationalise situations such as those observed by Cahn and Hagel (1962) where the pearlite growth velocity decreased and the pearlite spacing increased with time (Han et al, 1995) due to the partition of the alloying elements. In addition, Hillert's models provide an understanding of the results of Pickelsimer et al (1960) in which ortho-pearlite was formed at high transformation temperatures with full partitioning while a broad range of transition to para-pearlite occurred at lower transition temperatures.…”

“…The AImE conference of 1962 edited by Zackay and Aaronson (1962) remains an invaluable guide to the development of the subject. It also clearly demonstrates the debt which current researchers owe to the pioneering work of Hillert (1962), Cahn and Hagel (1962) and Kirkaldy (1962) in developing an understanding of the complex problem entailed in describing the detailed thermodynamics and kinetics of migrating interfaces. These contributions themselves were built on the concepts developed by Zener (1946) and the initial comprehensive studies of bain (1930) andHagel (1956).…”

“…The proceedings of the 1962 AImE conference, edited by Zackay and Aaronson (1962), contain a number of seminal papers on the decomposition of austenite to pearlite, including the work of Cahn and Hagel (1962) which discusses in detail both the analytical and experimental aspects of describing the nucleation and growth kinetics of the pearlite reaction. In addition, the book contains an excellent paper by Kirkaldy (1962) on the theory of diffusional growth and a paper by Hillert (1962) which demonstrates clearly the ability to gather a basic description of a spatially complex three-dimensional structure from precise two-dimensional metallographic sections.…”

Effects of Widening during Rolling on the Subsequent Recrystallization Kinetics of Copper

“…The recrystallized volume fraction of each texture component V Vi,cor are thus calculated as V Vi,cor =V Vi,measured /V V . The growth rates of cube and noncube grains in the NW and W samples are determined using a methodology first suggested by Cahn and Hagel [12] and later extended to include analyses of growth rates as a function of orientations [13] (see Fig. 2).…”

Internal Stress and Elastic Strain Energy in Pearlite and Their Accommodation by Misfit Dislocations

“…pearlite colony and block (nodule), have been analyzed for understanding how the hierarchical substructures form. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] Furthermore, many researchers have investigated the relation between mechanical properties and the unique microstructure with great interest. [12][13][14]22) From these researches, it is commonly recognized as a basic guideline on microstructural control of pearlitic steel that the lower the transformation temperature is, the finer the interlamellar spacing becomes, thereby leading to the improvement of strength.…”