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- W2608774003 abstract "In our investigation into the heat treatment of sintered materials involving heating in salt baths experiments were carried out on tensile test specimens of ZhGrl.0 material. The powder charge employed consisted of silver graphite (1.0 wt,%), zinc stearate (0.8%), and PZh2M iron powder mixed together for 2 h. Specimens were produced by single pressing under pressures of 5 and 7.5 tons/cm 2 and double pressing (5 + 8 tons/cm 2). The re-pressing of specimens was preceded by intermediate annealing for 2 h at 800~ in a converted natural gas atmosphere. The sintering of specimens was performed at a temperature of 1080 ~ 10~ in continuous furnaces provided with a converted natural gas atmosphere (with a dew point of minus 18-20~ The properties of the sintered materials obtained are summarized in Table 1. Analysis of the physicomechanlcat properties and structures of the materials in the as-sintered condition leads to the following conclusions. The porosity of sintered specimens produced by pressing under the same pressure showed a scatter of 1-3%, resulting in a scatter of mechanical properties of 10-15%. With increase in density the tensile strength, hardness, and ductility of the sintered materials grew (Table 1). The sintered materials had a ferritic-pearlit ic structure with some evenly distributed free carbon. The microhardness H/~ of the ferrite grains was 96-112 kg/mm 2 and that of the pearlite grains 170-192 kg/mm 2. With increase in density the pearlite content of the sintered materials rose." @default.
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- W2608774003 date "1976-01-01" @default.
- W2608774003 modified "2023-09-24" @default.
- W2608774003 title "MATERIAL* IN SALT BATHS" @default.
- W2608774003 hasPublicationYear "1976" @default.
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