PLASTIC DEFORMATION IN SINTERING OF SILVER POWDER BODIES
Abstract
Results are presented of an investigation of the effect of uniaxial tensile and compressive stresses on the kinetics of shrinkage during sintering of powder metal compacts. The experiments were conducted on compacts of electrolyticAg powder of a 44-micron fraction with a porosity of 30%. The sintering temperature was 900 + or - 10C. Tensile stresses were varied from 0 to 1.1 x 10 to the 6th power dynes/sq cm during heating periods of 6 min. At a tensile stress of 1 x 10 to the 6th power dynes/sq cm linear shrinkage ceased and elongation began. Volume shrinkage increased despite decreasing linear shrinkage until elongation began, then volume shrinkage decreased. Similar results were obtained when compression was applied. An analysis of the data indicated that plastic deformation does not effect the kinetics of shrinkage for short exposure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 21, 1960
- Accession Number
- AD0257122
Entities
People
- I.m. Fedorchenko
- R.o. Andriyevs'kiy
Organizations
- National Air and Space Intelligence Center