Conclusions
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1.
In the rolling of a composite containing inclusions whose hardness exceeds that of its matrix, the strengthening experienced by the matrix particles at the initial strip formation pressures is the greater the smaller the distance between adjacent inclusions.
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2.
The smaller the size of the inclusions the lower, other things being equal, is the level of strengthening required for the initiation of strip formation.
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3.
The limiting inclusion concentration at which strip loses its plasticity as a result of severe work-hardening of its matrix particles can be increased by employing relatively coarse fractions. This circumstance makes it possible to utilize the powder rolling process for the production of surfacing strip corresponding in chemical composition to medium- or even high-alloy steels.
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Literature cited
J. Friedel, Les Dislocations, Gauthier-Villars, Paris (1956).
A. I. Otrok, G. A. Vinogradov, et al., Poroshkovaya Met., No. 1 (1973).
V. P. Katashinskii and G. A. Vinogradov, Poroshkovaya Met., No. 5 (1965).
J. H. Tunderman and A. R. E. Singer, Powder Met.,12, No. 23, 219 (1969).
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Translated from Porosh-kovaya Metallurgiya, No. 12 (132), pp. 1–6, December, 1973.
The author is very grateful to O. A. Katrus and V. P. Katashinskii for their helpful discussions and examination of the results of this work.
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Otrok, A.I. Deformation strengthening of the matrix in the rolling of heterogeneous powder mixtures. Powder Metall Met Ceram 12, 947–950 (1973). https://doi.org/10.1007/BF00791733
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DOI: https://doi.org/10.1007/BF00791733