DONG Hao
,
ZHAO Yu
,
YU Xiaojun
,
LIAN Fazeng
钢铁研究学报(英文版)
The effects of Sn addition on core loss and texture of nonoriented electrical steels were investigated. Experiments revealed that the core loss of nonoriented electrical steels could be obviously decreased and the intensity of {111} texture and {112} texture of final annealed specimens could be markedly reduced by Sn addition. The reasons for reducing core loss and the intensity of unfavorable texture were analyzed.
关键词:
non-oriented;Sn;segregation;core loss;texture
CHEN Li
,
ZHOU Hong
,
ZHAO Yu
,
REN Luquan
钢铁研究学报(英文版)
The reticulate unsmoothed surfaces on HD die steel, which imitate the surface of soilburrowing animals (such as the dung beetle, earthworm, pangolin, and ant) are produced with various laser parameters. The characteristics (including width, depth, area ratio, and volume), microstructure, and hardness of the unsmoothed units are studied. At the same time, the wear resistance of the material with an unsmoothed surface is measured. The results show that the width and volume of the unit increase, the microstructure becomes coarser, the hardness decreases, and the wear resistance improves with the increase of the current intensity and pulse duration within a certain range. However, there is little difference between the extent to which the wear resistance of the material increases and the unsmoothed surface, when the current intensity and pulse duration increase to some extent. The wear resistance of the unsmoothed material under 300 A or 20 ms is better in the experiments. The improving extent of the wear resistance lies in a combination of the characteristics, microstructure, and hardness of the unsmoothed unit. An unsmoothed material with better properties can be processed if the laser parameters are well matched.
关键词:
microstructure;property;laser parameter;unsmoothed surface
