【摘 要】
：
The industrial trials of two cooling modes, i e, water cooling in forepart + air cooling in later part (WAC) and air cooling in forepart + water cooling in later part (AWC), were carried out for a Ti-Nb microalloyed steel. The average cooling rates and co
【机 构】
：
The State Key Laboratory of Refractories and Metallurgy, Key Laboratory for Ferrous Metallurgy and R
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
The industrial trials of two cooling modes, i e, water cooling in forepart + air cooling in later part (WAC) and air cooling in forepart + water cooling in later part (AWC), were carried out for a Ti-Nb microalloyed steel. The average cooling rates and coiling temperature were the same for two modes. The continuous cooling transformation (CCT) curve of the tested steel was drawn. The effects of the cooling mode on the microstructure, precipitates, and properties of the steels were investigated. Results show that the strength of the steel in the WAC mode is significantly larger than that in the AWC mode, mainly because the smaller the grain size, the more and finer the grain precipitates. Therefore, when the average cooling rate is constant, the fast cooling in the forepart is an effective method to increase the strength of steels. However, the increase in the strength is accompanied by the decrease in toughness, so that the toughness of the steel should be considered when changing the cooling mode.
其他文献
We investigated mechanical properties of concretes made with impurity aggregates of different combinations.Besides the mechanisms were explored by EDS,CT,and hardness testing.The results showed that fully rust-stained and surface rust-stained sandstone ag
The visible-light-active mesoporous cuprous oxide nanoparticles were successfully synthesized via a facile precipitation process with the presence of gelatin, which was demonstrated to play an important role in the formation of mesoporous structure and th
Using plasma build-up welding technology, Ni60, WC, Cr3C2, and TiC composite powders were clad on the surface of the substrate in a certain proportion according to the metallurgical bonding method to increase the bond strength between the coating and the
The effect of thermal wave at the initial stage for non-conductive Al2O3 powders compact in field assisted sintering technique (FAST) was investigated. The Lord and Shulman type generalized thermos-elastic theory was introduced to describe the influence o
The interaction between stress and galvanic during the corrosion process of 5050 aluminum alloys was studied and the evolution of mechanics properties was indicated. Electrochemical impedance technique and scanning electron microscopy were used to analyze
This study presents the use of chicken eggshells waste utilizing palm kernel shell based activated carbon (PKSAC) through the modification of their surface to enhance the adsorption capacity of H2S.Response surface methodology technique was used to optimi
The composite phase change material (PCM) consisting of phase change paraffin (PCP) and polymethyl methacrylate (PMMA) was prepared as a novel type of shape-stabilized PCM for building energy conservation through the method of bulk polymerization. The che
In order to develop economically anti-ultraviolet (UV) aging additives to bitumen and extend the comprehensive utilization of lignin materials, lignosulfonate (LS) was selected to intercalate into layered double hydroxides (LDHs), then the LS intercalated