Abstract
Recent work with emphasis on the direct measurement of segregation of impurities and alloying elements as they relate to temper embrittlement of low-alloy steels is reported. Low-alloy steels tempered between 320 to 525/sup 0/C are embrittled by the segregation of impurity and alloy elements to the grain boundaries. Segregation occurs during tempering. Segregation in austenite is not important. Alloy elements promote impurity segregation. Embrittlement occurs by the reduction of cohesion at the grain boundaries. Antimony and tin are most effective embrittlers. Carbon and boron enhance ductility. (FS)
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