Affiliation:
1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing , Beijing 100083 , China
Abstract
Abstract
Sulfur is added to low-alloyed steel FAS3420H to improve the free-cutting property of the steel. Elongated MnS inclusions usually deteriorate the mechanical and process performance of steels, so the control of shape and size of MnS is essential. The statistical analysis of MnS inclusions in as-cast and rolled steels at different positions shows that the distribution and aspect ratio of MnS in rolled steel are closely related to the quantity and size of MnS in as-cast one. The in situ observation and experimental results reveal that homogenization treatment effectively reduced MnS inclusions size and transformed their shape to globule or ellipsoid. Significant change of quantity and size of MnS inclusions was identified only when the soaking time exceeds 5 h at 1,250℃. Additionally, a kinetic model is presented to quantitatively characterize the behavior of MnS inclusions during homogenization process.
Subject
Physical and Theoretical Chemistry,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference22 articles.
1. Berto, F., P. Gallo, and P. Lazzarin. High temperature fatigue tests of un-notched and notched specimens made of 40CrMoV13.9 steel. Materials and Design, Vol. 63, No. 1, 2014, pp. 609–619.
2. Gallo, P. and F. Berto. High temperature fatigue tests and crack growth in 40CrMoV13.9 notched components. Frattura ed Integrità Strutturale, Vol. 9, No. 34, 2015, pp. 180–189.
3. Wang, J. L., A. Y. Qiao, and X. G. Zhang. Summary on mechanism of machinability and control of sulfide for sulfur free-cutting steel. Science and Technology of Baotou Steel, Vol. 41, No. 1, 2015, pp. 30–32.
4. Fujiwara, J., T. Kawazoe, and N. Matsui. Cutting mechanism of sulfurized free-machining steel. Key Engineering Materials, Vol. 407, 2009, pp. 416–419.
5. Li, Y. M., F. X. Zhu, F. P. Cui, and K. Fang. Analysis of forming mechanism of lamination defect of steel plate. Journal of Northeastern University (Natural Science), Vol. 28, No. 7, 2007, pp. 1002–1005.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献