Accession Number : AD0763443

Title :   Acoustic Emission from Ferrous Martensites.

Descriptive Note : Technical rept.,

Corporate Author : PHILCO-FORD CORP NEWPORT BEACH CALIF AERONUTRONIC DIV

Personal Author(s) : Ono,Kanji ; Schlotthauer,T. C. ; Koppenaal,T. J.

Report Date : JUL 1973

Pagination or Media Count : 19

Abstract : Acoustic Emission (AE) during martensitic transformation of two Fe-Ni-C alloys (31.4 Ni-0. 03C and 22 Ni-0.44 C) was investigated as a function of their thermomechanical history. The use of AE technique for M sub s temperature determination in alloys steel is discussed. This study was a part of an alloy development program and demonstrated the merit of AE technique for this application. In all, 15 different steel compositions were examined.

Descriptors :   (*STEEL, SOUND), MARTENSITE, PHASE STUDIES, TRANSITION TEMPERATURE, TRANSFORMATIONS, NICKEL ALLOYS, HEAT TREATMENT, MICROSTRUCTURE, ELECTRON MICROSCOPY

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE