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文章初步研究了稀土和砱在淬火钢回火时在原奥氐体晶界的偏聚。许多研究者都发现在Ni—Cr—P钢中,伴随着高温回火脆性的发展,发生砱在原奥氐体晶界的(?)完全,同时还发生镍随着砱的突集而在原奥氐体晶界突集。在Mn—Sb钢和Ni—Cr—Sb钢中也都发现合金元素锰和杂质元素锑的偏聚,并分析了合金元素和杂质元素的相互作用。本文在原来的研究基础上进一步测定了合金元素稀土.锰和杂质元素砱在DZ—40钢和重轨钢中淬火后高温回火时在原奥氐体晶界的偏聚。
The article preliminarily studied the segregation of rare earths and clam in the grain boundaries of the original austenite during tempering of quenched steel. Many researchers have found that in the Ni-Cr-P steel, with the development of high-temperature temper brittleness, the occurrence of? (?) In the original austenite grain boundary is complete, and nickel also occurs with the 突 of the sudden in the original Austrian氐 body grain boundary burst. In Mn-Sb and Ni-Cr-Sb steels, segregation of alloying elemental manganese and impurity element antimony was also observed, and the interaction between the alloying elements and the impurity elements was analyzed. Based on the previous studies, this paper further determined the segregation of rare earth alloying elements in the grain boundary of austenite at high temperature after quenching in DZ-40 steel and heavy rail steel.