核电用高强韧厚规格调质钢板的力学性能和显微结构  

Microstructure and Mechanical Properties of Q and T Heavy Plate for Nuclear Power Station Purpose

作　　者：毕志超[1] 张继明[1] 刘晓东[1] 蒋善玉[1] 韩启彪[1] 孙卫华[1] 

机构地区：[1]济南钢铁集团有限公司,山东济南250101

出　　处：《钢铁研究学报》2011年第10期59-62,共4页Journal of Iron and Steel Research

摘　　要：通过实验室调质工艺研究,确定了核安全壳用钢SA738Gr.B热处理工艺,经工业化热处理后,45mm厚度SA738Gr.B钢具有良好的拉伸性能和优异的低温冲击韧性,同时具有稳定的高温拉伸性能,其显微组织为均匀细小的板条贝氏体,在板条内和界面处有大量弥散的纳米级碳化物析出。SA738Gr. B steel plate for nuclear power station purposes was quenched and tempered with the heat treatment technology obtained by lab-experiments. Industrial processing was implemented on 45 mm thick plates which displayed well tensile properties and Charpy V-notch impact energy. The plate also demonstrated well me- chanical properties at 200 ~C. Well uniformity of fine lath-banite characterized the microstructure of the plate with nano-sized carbides dispersing inner the banite structure and its boundaries.

关 键 词：力学性能 显微组织 贝氏体 碳化物 核电 

分 类 号：TG142.1[一般工业技术—材料科学与工程]