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氧化物冶金技术是利用钢中细小非金属夹杂物诱导晶内铁素体形核来细化晶粒的一种技术,利用该技术可以获得高强度、高韧性以及焊接性能良好匹配的高性能钢材。然而当前研究结果对晶内铁素体形核机理的解释并不统一,每种形核机理均存在无法解释的反例。文中介绍了氧化物冶金技术的中心思想,描述了晶内铁素体的显微组织特征,概括总结了能够作为钢中形核质点的夹杂物种类及性状,分析了晶内铁素体的晶体学特征,并指出了氧化物冶金技术亟待解决的问题。
Oxide metallurgy is a technique that uses fine non-metallic inclusions in steel to induce intragranular ferrite nucleation to refine grains. The high-strength steel with high strength, high toughness and good weldability can be obtained by this technology. However, the current research results do not give a unified explanation of the intragranular ferrite nucleation mechanism, and unexplained counterexamples exist for each nucleation mechanism. The paper introduces the central idea of oxide metallurgy technology, describes the microstructure characteristics of intragranular ferrite, summarizes the types and traits of inclusions that can be used as nucleation sites in steel, analyzes the intragranular ferrite crystal It also points out the problems to be solved in oxide metallurgy.