Accession Number : AD0675563

Title :   A STUDY OF DISLOCATION STRUCTURE OF SUBBOUNDARIES IN MOLYBDENUM SINGLE CRYSTALS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Feng Tuan, ; Li Ch'i, ; Min Nai-pen,

Report Date : 10 JAN 1968

Pagination or Media Count : 27

Abstract : Using the etch-figure technique, the authors have directly observed the dislocation structure of subboundaries in electron-beam zone-melted molybdenum single crystals. A thorough analysis of experimental results are given. The authors have observed various patterns indicating interactions of singular dislocations with subboundaries, in particular, 'steps' on the subboundaries induced by singular dislocations and also interactions of inclusions with subboundaries. The etch-figure method of observing dislocations is an effective means for the quantitative study of dislocation substructure in crystals. (Author)

Descriptors :   (*MOLYBDENUM, *DISLOCATIONS), GRAIN STRUCTURES(METALLURGY), SINGLE CRYSTALS, ZONE MELTING, ELECTRON BEAM MELTING, GRAIN BOUNDARIES, MATHEMATICAL ANALYSIS, ETCHED CRYSTALS, ETCHING, ELECTROEROSIVE MACHINING, CHINA

Subject Categories : Metallurgy and Metallography
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE