STUDY OF THE EFFECT OF SOLIDIFICATION STRUCTURES ON THE STRENGTH OF METALS.
Abstract
Progress on work associated with the mechanical working of Al-Al3Ni eutectic alloy specimens consisted of: improvements made to the unidirectional solidification apparatus to produce more perfectly aligned specimens; the hydrostatic extrusion of specimens with a colony microstructure by various amounts up to 65% reduction in area in one operation; and a preliminary evaluation of the effect of strain hardening on the yield strength of as-cast material. In addition, it has been found that specimens with the colony microstructure could not be drawn at a reduction of 9%, although they could be extruded by reduction up to at least 65%. Work on the other phase of the research concerned with the mechanical properties of as-controlled magnesium base eutectics included: the construction of a new melting chamber to facilitate the production of master heats; experimentation with several heats of four different alloys; the unidirectional solidification of Mg-Cu and Mg-Ni specimens; and preliminary evaluation of the mechanical properties of one of the 'controlled' eutectics (viz., Mg-Mg2Cu). (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 28, 1966
- Accession Number
- AD0632081
Entities
People
- R. W. Hertzberg
- R. W. Kraft
Organizations
- Lehigh University