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同质化处理对H13钢中的微结构,树突分离和初级碳化物的影响

Xijie Wang¹, Huan Yu¹, Sibo He¹

¹Xingfa School of Mining Engineering, Wuhan Institute of Technology, Wuhan 430205, China.

Materials (Basel, Switzerland)

|October 29, 2025

概括

在1150-1250°C的H13钢的均质化,提炼树突结构,并溶解碳化物. 最佳浸泡时间对于控制分离和颗粒大小至关重要,富含V的碳化物需要较低的Ti和N含量才能完全溶解.

科学领域:

金工程金工程金工程
材料科学材料科学材料科学

背景情况:

H13钢是一种广泛使用的工具钢,在热处理过程中需要仔细控制微观结构.
同质化对于减少分离和提炼初级碳化物至关重要,影响机械性能.

研究的目的:

在H13钢材均化过程中调查树突结构演变,初级碳化物溶解和奥氏体颗粒生长.
建立一个动力模型来预测均质化浸泡时间.
实现对分离,初级碳化物和颗粒大小的平衡控制.

主要方法:

在1150至1250°C的温度范围内对H13钢进行实验研究.
开发一种同质化动力模型来预测浸泡时间.
分析树突结构的消失,碳化物溶解和奥氏体颗粒的生长.

主要成果:

在同质化过程中,树突结构逐渐消失,在1250°C完全消除需要600分钟.
富含Mo的碳化物在研究的温度范围内完全溶解,而富含V的碳化物甚至在1250°C下仍存在.
在1150°C,奥氏体粒的生长缓慢,但在更高的温度 (1200-1250°C) 变得异常粗.

结论:

同质化有效地通过减少树突分离和溶解初级碳化物来提炼H13钢的微结构.
富含V的碳化物完全溶解受到Ti和N含量的影响,这表明进一步优化的潜力.
控制同质化温度和时间对于管理奥氏体粒的生长和实现所需的材料特性至关重要.

关键词:

在H13钢铁中.树突的分离分离.粒度大小粒度大小粒度大小均质化同质化均质化主要碳化物是主要的碳化物.

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