Internal Friction Measurements for the Analysis of Hydrogen in Steel Parts

Download or read book Internal Friction Measurements for the Analysis of Hydrogen in Steel Parts written by S. H. A. Begemann and published by . This book was released on 1968 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Damping versus temperature curves were determined, by means of a torsion pendulum internal friction apparatus, for hydrogen charged cold drawn 4340 steel wire. A relaxation peak, identified as the Hydrogen Cold-Work Peak, was found in the curves between -90C and -70C. A plot of this relaxation peak height versus charging time shows a linear relationship over only a limited range. The low hydrogen concentration levels that can cause hydrogen embrittlement were found to be below the limits of accurate detection by internal friction methods. (Author).