Effect of austenite grain boundary mobility on hardenability of steels containing vanadium
Effect of austenite grain boundary mobility on hardenability of steels containing vanadium
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DOI：
10.1179/mst.1988.4.11.967
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发表时间：
1988-11
影响因子：
1.8
通讯作者：
B. Garbarz;F. Pickering
中科院分区：
文献类型：
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作者：
B. Garbarz;F. Pickering
对于含0.2 - 0.3%C、1.5 - 1.7%Mn、0.35%V及少量Al或Ti的钢，在奥氏体化过程中晶界迁移速率与其淬透性之间建立了一个相关关系。奥氏体晶界和钉扎粒子之间的相互作用进行了研究，使用透射电子显微镜和偏析的奥氏体晶界进行了研究，使用俄歇电子能谱。它已得出结论，晶界迁移的速度在奥氏体化过程中的影响程度的平衡偏析的奥氏体晶界，这反过来又影响了淬透性。奥氏体晶界的钉扎使得合金元素的潜在淬硬性效应得以增加。机制已被讨论的方式，其中偏析，特别是V，发生钉扎或固定奥氏体晶界，并已被认为是最有效的晶界钉扎可以实现的条件。提出了一些技术影响。MST/804
A correlation has been established between the rate of grain boundary migration during austenitisation and the hardenability of steels containing 0·2–0·3%C, 1·5–1·7%Mn, up to 0·35% V, and small additions of Al or Ti. Interaction between the austenite grain boundaries and pinning particles was investigated using transmission electron microscopy and segregation to the austenite grain boundaries was examined using Auger electron spectroscopy. It has been concluded that the velocity of grain boundary migration during austenitisation influences the extent of equilibrium segregation to the austenite grain boundaries which, in turn, affects the hardenability. Pinning of the austenite grain boundaries enabled the potential hardenability effect of the alloying elements to be increased. Mechanisms have been discussed for the ways in which segregation, particularly of V, occurs to pinned or immobilised austenite grain boundaries, and the conditions by which most effective grain boundary pinning can be achieved have been considered. Some technological implications have been suggested. MST/804