低合金钢中碳氮化物析出形态控制和高温韧性

• 作 者: 殷碧群 杨菊娣
• 机 构: 武钢钢研所,武钢钢研所,
• 出 处: 钢铁研究
• 发表日期: 1989年01期
• 关键词: 碳氮化物 奥氏体晶界 形态控制 预变形 韧性断裂 表面缺陷 低应变 温度区域 破断 析出物

据“铁と钢”1987,73(10)报道低碳低合金钢的高温变形、特别是与连铸坯表面缺陷的关系曾作过多方面的研究。在低温γ—γ/α两相温度区域以低应变速度变形时,出现沿奥氏体晶界破断,晶界显著脆化显然,连铸坯表面质量与这种现象有着密切的关系。本研究试图在不影响正常作业的情况下,通过碳化物析出形态控制,探讨消除连铸坯表面缺陷的方法。

According to “Iron and Steel” 1987,73 (10) reported that low-carbon low-alloy steel high temperature deformation, especially with the slab surface defects have been studied in many ways. In the low-temperature γ-γ / α two-phase temperature region at low strain rate deformation occurs along the austenite grain boundary fracture, grain boundary significant embrittlement Obviously, the slab surface quality and this phenomenon has a close relationship. This study attempts to eliminate the surface defects of continuous casting billet by controlling the precipitation pattern of carbide without affecting the normal operation.