有序相溶解对发电机用电工钢性能的影响  

Dissolution Phenomena and Microhardness Characteristics of Ordered Phases in Electrical Steel

作　　者：贾宇向[1] 李润娟[1] 

机构地区：[1]河南广播电视大学机电工程学院,郑州450008

出　　处：《煤炭技术》2017年第6期324-325,共2页Coal Technology

摘　　要：通过TEM、电阻率、显微硬度和纳米硬度测量等手段研究了硅含量在5%~6.5%的电工钢中B2有序相的消失及形成现象。结果表明:电工钢(5%~6%Si)中抑制B2有序相形成的必要临界冷却速度随硅含量呈指数增加,B2有序相的消失行为取决于退火温度和显微偏析;Si含量超过3.5%的电工钢的显微硬度只取决于硅含量,且其组织中的A2相和B2相之间的纳米硬度差别很小。By means of TEM, resistivity, micro hardness and nano hardness measurement, the disappearance and formation of B2 ordered phase of silicon content in electrical steel 5% ~6.5% was studied. The results show that the necessary critical cooling rate of B2 in the formation of the ordered phase of electrical steel （5%~6%Si） increases with the increase of silicon content, the disappearance of the ordered phase of B2 depends on the annealing temperature and the micro segregation. The microhardness of Si content in more than 3.5% of the electrical steel depends only on the silicon content, and the nano hardness difference between the A2 and B2 phases in the microstrueture is very small.

关 键 词：电工钢 有序相 纳米硬度 

分 类 号：TM275[一般工业技术—材料科学与工程] TG142[电气工程—电工理论与新技术]