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高强度低合金钢是通过微合金化和控制轧制来提高强韧性的。在控制轧制研究中,探讨奥氏体形变再结晶行为极为重要,但是奥氏体晶界难以腐蚀,并且腐蚀条件多变。因此,迅速清晰地腐蚀显示奥氏体晶界,并找出影响腐蚀条件的因素及规律为人们所关注。本文根据试验总结高温形变条件影响高强度低合金钢金相腐蚀条件的经验规律,并进行了粗浅的理论分析。一、试验方法试验用钢为15MnV。试样在1200℃加热后经高温形变(热轧)。采用5阶梯试样进行二道次热轧,第一道次后保温20秒以实现回复再结晶。由于各台阶位置实现了不同的
High-strength low-alloy steel is micro-alloying and controlled rolling to improve strength and toughness. In control rolling research, it is very important to discuss the recrystallization behavior of austenite deformation, but it is difficult to corrode the austenite grain boundaries and the corrosion conditions are changing. Therefore, the prompt and clear corrosion of austenite grain boundaries, and find out the factors that affect the corrosion conditions and the law of concern. In this paper, based on the experimental summary of high temperature deformation conditions of high-strength low-alloy steel metallographic corrosion of the empirical rule, and conducted a superficial theoretical analysis. First, the test method Test steel is 15MnV. The sample was heated at 1200 ° C and then deformed at high temperature (hot rolling). A 5-step sample was used for two-pass hot rolling and the first pass was followed by a 20 second incubation to achieve recovery recrystallization. Due to the different steps to achieve a different location