Effects of Austenizing Temperature on Reprecipitation of BN  

作　　者：YIN Shi-ke A Rong Mitsuru Tanino 

机构地区：[1]China Iron and Steel Research Institute Group [2]Fundamental Research Laboratory,Nippon Steel Co.

出　　处：《Journal of Iron and Steel Research International》2013年第9期99-104,共6页

摘　　要：Most of BN was precipitated around the spherical MnS and formed the compound of MnS and BN during the isothermal treatment at 850 ℃ after austenizing at 950-1050 ℃. Most of MnS was transformed into polygon when austenized at 1 150 ℃ or above, which could not be the nuclei of BN anymore. During the insulation process at 850 ℃, MnS kept the state of monomer. The compound of MnS and BN at earlier time was of fine polycrystalline in spherality and BN was formed as a plate-like monocrystal on a certain part of the polycrystalline when its dimension reached 0.6 μm.Most of BN was precipitated around the spherical MnS and formed the compound of MnS and BN during the isothermal treatment at 850 ℃ after austenizing at 950-1050 ℃. Most of MnS was transformed into polygon when austenized at 1 150 ℃ or above, which could not be the nuclei of BN anymore. During the insulation process at 850 ℃, MnS kept the state of monomer. The compound of MnS and BN at earlier time was of fine polycrystalline in spherality and BN was formed as a plate-like monocrystal on a certain part of the polycrystalline when its dimension reached 0.6 μm.

关 键 词：austenizing temperature BN repreeipitation isothermal treatment 

分 类 号：TG142.25[一般工业技术—材料科学与工程]