Accession Number : AD0682008

Title :   STRESS CORROSION CRACKING OF Ti-8Al-1Mo-1V ALLOY IN METHANOL-HYDROCHLORIC ACID SOLUTIONS.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS

Personal Author(s) : Levy,Milton ; Seitz,David W.

Report Date : NOV 1968

Pagination or Media Count : 20

Abstract : Pitting potentials derived from polarization data for Ti-8Al-1Mo-1V in Ch3OH, CH3OH-HCl, and CH3OH-HCl-H2O media correlate well with the stress corrosion cracking results. The order of magnitude of activation energy for the temperature-dependent stress corrosion cracking process is in good agreement with a diffusion-controlled reaction, either involving hydrogen diffusion or a mass transport limited reaction involving Cl(-). Controlled potential experiments are consistent with an electrochemical mechanism. Thus, corrosion along an anodic path involving Cl(-) is concluded to be the mechanism of cracking of the alloy in CH3OH-HCl environments. (Author)

Descriptors :   (*TITANIUM ALLOYS, *STRESS CORROSION), ELECTROCHEMISTRY, CRACKS, CARBINOLS, HYDROCHLORIC ACID, POLARIZATION, HEAT OF ACTIVATION, VOLTAGE

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE