ISSN:
1600-5767
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Geosciences
,
Physics
Notes:
The cold-rolling and annealing textures of 18%Cr–10%Ni, 18%Cr–12%Ni and 18%Cr–14%Ni steels have been examined with particular reference to the role of the martensite transformation in developing primary recrystallization textures. The amount of martensite formed after 90–95% cold rolling increases from 5̃% for 18%Cr–14%Ni steel to 8̃6% for 18%Cr–10%Ni steel, and textures of both α′ martensite and the remaining austenite are the same for each steel. Principal components of the martensite texture are {112} 〈\bar 110〉 and {111} 〈\bar 1\bar 12〉, with a minor component {001} 〈\bar 110). The austenite exhibits a normal f.c.c. alloy type texture, {110} 〈\bar 112〉+ a minor {110} 〈001〉 component. Both 18%Cr–12%Ni and 18%Cr–14%Ni steels recrystallize to a {225} 〈\bar 5\bar 33〉 texture, whereas the 18%Cr–10%Ni steel recrystallizes to mainly {230} 〈3′\bar 2′14〉 and {6′10′1} 〈5\bar 31〉 orientations with considerable spread remaining in the region of {6′8′17}〈\bar 5\bar 75〉, which is close to {225} 〈\bar 5\bar 33〉. Factors influencing development of the annealing textures are the relative amounts of α′ and γ formed by cold rolling, recovery in both phases, α′ → γ shear transformation, variant selectivity during the transformation and, finally, competitive growth of favourably oriented nuclei.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S002188987200888X
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