Effect of tempering temperature on monotonic and cyclic properties of a high–strength low–alloy chain steel
作者:
PlumbridgeW. J.,
KneeN.,
期刊:
Materials Science and Technology
(Taylor Available online 1985)
卷期:
Volume 1,
issue 8
页码: 577-582
ISSN:0267-0836
年代: 1985
DOI:10.1179/mst.1985.1.8.577
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractThe influence of tempering temperature in the range 200–600°C on the monotonic and cyclic response of a high-strength, low–alloy steel used for haulage chains has been investigated. Static properties are little affected by tempering up to 400°C, with a small loss of strength arising from carbide coarsening. At higher tempering temperatures, dislocation annihilation is substantial and the strength falls markedly. On undergoing high–strain fatigue, the alloy exhibits cyclic softening at all tempering temperatures, but with a maximum of about 25% after a 400°C temper. The microstructural changes producing this are difficult to detect directly, but it is thought that dislocation unpinning has an important role. For tempering temperatures in excess of 400°C, the reduced softening can clearly be equated with a dislocation redistribution and the formation of cell substructure within the ferrite grains. Estimations of the magnitude of the various components of strength are made.MST/199
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