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Unusually large anisotropy of strength has been observed in commercially produced sheets of a duplex stainless steel, Fe–1·5Mn–22Cr–5·5Ni–3Mo–0·15N. The austenite and ferrite phases in this material are highly elongated and possess unusually sharp preferred crystallographic orientations. Both phases are in a recrystallized condition and have almost equal hardnesses. On the basis of the present measurements and a crystallographic analysis of plastic flow it is concluded that the observed anisotropy cannot be due to composite reinforcement in the duplex structure but is rather a result of texture hardening.MST/214
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Hutchinson et al. (1985) studied this question.
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