Liquid Metal Embrittlement of ASTM A723 Gun Steel by Indium and Gallium.
Abstract
An investigation was performed to determine the effects of gallium and indium on the liquid metal embrittlement of ASTM A723 gun steel. Liquid metal embrittlement tests were conducted slightly above the melting temperature of the embrittling metal in an elevated temperature furnace coupled to an Instron mechanical tester. Low cycle fatigue and monotonic tensile testing of notched tensile specimens were performed. In addition, the effect of straln rate on the embrittlement of ASTM A723 by gallium was evaluated. The low cycle fatigue tests showed a high sensitivity to liquid metal embrittlement; both the gallium and the indium significantly degraded the fatigue life of the gun steel. Monotonic tests on ASTM A723 also showed an embrinling effect with both gallium and indium, although the effect was less severe than when tested in low cycle fatigue.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1999
- Accession Number
- ADA365497
Entities
People
- Charles Mossey
- Edward Trolano
- Gregory N. Vigilante
Organizations
- United States Army Armament Research, Development and Engineering Center