Tensile fracture and fractographic analysis of 1045 spheroidized steel under hydrostatic pressure
- 31 January 1990
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 5 (1) , 83-91
- https://doi.org/10.1557/jmr.1990.0089
Abstract
Void formation in tensile test under hydrostatic pressure is characterized through quantitative metallography, and the fracture mechanism under pressure is analyzed by fractography. Transition of the fracture surface from the cup-and-cone under atmospheric pressure to a slant structure under high pressure is explained on the basis of the void development leading to fracture and the concomitant change in fracture mechanism. The concept of “shear blocks” is introduced to illustrate the features observed on the fracture surface of specimens tested under high pressure. It is postulated that shear blocks evolve to connect the central crack regions with the shear crack initiated on neck surface due to the severe necking deformation under applied pressure.Keywords
This publication has 10 references indexed in Scilit:
- The influence of hydrostatic pressure on the flow stress and ductility of a spherodized 1045 steelActa Metallurgica, 1983
- A model of ductile fracture based on the nucleation and growth of voidsActa Metallurgica, 1981
- Effect of hydrostatic pressure on plastic-flow properties of iron single crystalsActa Metallurgica, 1979
- The effect of hydrostatic pressure on the deformation behavior of maraging and HY-80 steels and its implications for plasticity theoryMetallurgical Transactions A, 1976
- Separation of second phase particles in spheroidized 1045 steel, Cu-0.6pct Cr alloy, and maraging steel in plastic strainingMetallurgical Transactions A, 1975
- Distribution of plastic strain and negative pressure in necked steel and copper barsMetallurgical Transactions A, 1975
- The influence of hydrostatic pressure on the tensile deformation of a spheroidised 0.5% steelScripta Metallurgica, 1974
- Mechanical Behavior of MaterialsPhysics Today, 1967
- Studies in Large Plastic Flow and FracturePublished by Harvard University Press ,1964
- The mechanism of crack propagation in ductile metalsActa Metallurgica, 1959