A STUDY OF THE SIZE EFFECT IN THE PLATING EMBRITTLEMENT OF HIGH STRENGTH STEELS.
Abstract
The report describes sustained load tests made on cadmium plated notched (K sub t = 3.2) specimens 1/4 in and 1 in diameter. Two steels were studied, En 24 and NCMV heat treated to 120 ton/sq in TS. The results showed that En 24 was very susceptible to plating embrittlement, the maximum stress for unlimited life being in the region of 43 ton/sq in (30% NTS). NCMV steel was found to be less sensitive having a corresponding value of 62-70 ton/sq in (40 to 45% NTS). Comparative tests on NCMV steel showed no significant difference between the lives of large and small specimens. In determining the life under sustained load, a minimum testing time of 500 hr was found to be necessary. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1966
- Accession Number
- AD0641315
Entities
People
- H. C. Davis
- Josephine A. Gray
Organizations
- Royal Aircraft Establishment