Effects of different modes of hot cross-rolling in 7010 aluminum alloy: part II. mechanical properties anisotropy

Mondal, Chandan and Singh, AK and Mukhopadhyay, AK and Chattopadhyay, K (2013) Effects of different modes of hot cross-rolling in 7010 aluminum alloy: part II. mechanical properties anisotropy. In: Metallurgical and Materials Transactions A, 44A (6). pp. 2764-2777.

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Abstract

The influence of microstructure and texture developed by different modes of hot cross-rolling on in-plane anisotropy (A (IP)) of yield strength, work hardening behavior, and anisotropy of Knoop hardness (KHN) yield locus has been investigated. The A (IP) and work hardening behavior are evaluated by tensile testing at 0 deg, 45 deg, and 90 deg to the rolling direction, while yield loci have been generated by directional KHN measurements. It has been observed that specimens especially in the peak-aged temper, in spite of having a strong, rotated Brass texture, show low A (IP). The results are discussed on the basis of Schmid factor analyses in conjunction with microstructural features, namely grain morphology and precipitation effects. For the specimen having a single-component texture, the yield strength variation as a function of orientation can be rationalized by the Schmid factor analysis of a perfectly textured material behaving as a quasi-single crystal. The work hardening behavior is significantly affected by the presence of solute in the matrix and the state of precipitation rather than texture, while yield loci derived from KHN measurements reiterate the low anisotropy of the materials. Theoretic yield loci calculated from the texture data using the visco-plastic self-consistent model and Hill's anisotropic equation are compared with that obtained experimentally.

Item Type:	Journal Article
Publication:	Metallurgical and Materials Transactions A
Publisher:	Springer
Additional Information:	Copyright of this article belongs to Springer.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	11 Jun 2013 07:39
Last Modified:	11 Jun 2013 07:39
URI:	http://eprints.iisc.ac.in/id/eprint/46634

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