STUDY OF THE EFFECT OF SOLIDIFICATION STRUCTURES ON THE STRENGTH OF METALS.
Quarterly Progress rept. no. 3,
LEHIGH UNIV BETHLEHEM PA INST OF RESEARCH
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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
- Properties of Metals and Alloys
- Fabrication Metallurgy