超大规格H13钢锻材组织与性能优化试验  

Experimental Study on Microstructure and Property Optimization of Oversize H13 Steel Forgings

作　　者：杨云志 刘洪波 郭李波 雷玉臣 Yang Yunzhi;Liu Hongbo;Guo Libo;Lei Yuchen(Jiangyin Xingcheng Special Steel Works Co.,Ltd.,Jiangyin,Jiangsu,214429)

机构地区：[1]建龙北满特殊钢有限责任公司研发部,黑龙江齐齐哈尔161041

出　　处：《特钢技术》2021年第4期9-12,共4页Special Steel Technology

摘　　要：本研究结果表明,超大规格H13钢经过1270℃高温扩散退火处理、镦粗与拔长结合的多次锻造以及正火+球化处理,钢的组织中无一次碳化物,显微组织满足北美压铸模金相标准NADCA 207-2003的图谱要求。钢中含有的V、Ti的合金碳化物是影响冲击性能的主要因素。The results show that there is no primary carbide in the microstructure of oversize H13 steel after 1270 ℃ high temperature diffusion annealing, multiple forging combined with upsetting and drawing, normalizing and spheroidizing treatment, and the microstructure meets the requirements of NADCA 207-2003. The V and Ti alloy carbides in the steel are the main factors affecting the impact properties.

关 键 词：H13钢 碳化物 冲击性能 高温扩散 显微组织 

分 类 号：TG142.15[一般工业技术—材料科学与工程]