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An unfavorable effect is established for a high sulfur content on the high-temperature strength properties of single-crystal alloy ZhS36 in stress-rupture tests based on 500 h, on the average number of cycles to failure during low-cycle fatigue tests, and also on coated alloy isothermal heat resistance. The unfavorable effect of sulfur may be overcome by alloy refinement with lanthanum followed by...
The effect of nitrogen admixtures on the low-cycle fatigue of single crystals of alloy ZhS30-VI is studied. It is shown that the growth in the nitrogen content from 5 to 20 ppm decreases the number of cycles before failure by a factor of 1.5. Such difference in the properties may be connected with the content, shape and sizes of nitrides and carbonitrides in the alloys with low and high nitrogen content.
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