Table of Contents
Texture of Crystalline Solids
Volume 3 (1978), Issue 1, Pages 37-51
http://dx.doi.org/10.1155/TSM.3.37

Effect of Dynamic Strain Aging on the Plastic Anisotropy and Mechanical Properties of Low-Carbon Phosphorus Steels

Research Laboratory, U. S. Steel Corporation, Monroeville, Pennsylvania 15146, USA

Received 22 September 1977

Copyright © 1978 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effects of a dynamic-strain-aging treatment, as compared with a static-strain-aging treatment, on plastic anisotropy and mechanical properties has been determined for vacuum-melted low-carbon phosphorus steels containing various amounts of silicon. It was found that prestraining at 185°C, as compared with straining at 22°C followed by aging for four hours at 100°C, resulted in about twice the increase in yield strength (90 versus 48 MPa) on subsequent tension testing at 22°C and an improvement in rm values from about 1.8 to 2.0.

Analyses of the textures and dislocation structures of the steels after the two strain-aging treatments and after subsequent deformation at 22°C showed that a greater dislocation density gives rise to the greater strengthening of dynamic-strain-aged specimens, and a finer polyhedral network of dislocation tangles is believed to be the reason for their higher rm values.