【摘 要】
:
A new V-Ti-Mo complex micro-alloyed hot-rolled high strength sheet steel was developed by controlling a thermomechanical controlled processing(TMCP)schedule
【机 构】
:
School of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650
论文部分内容阅读
A new V-Ti-Mo complex micro-alloyed hot-rolled high strength sheet steel was developed by controlling a thermomechanical controlled processing(TMCP)schedule,in particular with variants in coiling temperature.At coiling temperature of 600,the experimental steel has the best mechanical properties: ultimate tensile strength(UTS)1000 MPa,yield strength(YS)955 MPa and elongation(EL)17%.Furthermore,the contributions of precipitation hardening and grain refinement hardening were high to about 310 and 361 MPa,respectively.The steels developed were mainly strengthened by a combined effect of ferrite grain refinement hardening and precipitation hardening.The variation in contribution of precipitation hardening increment caused a significant difference in YS.
其他文献
To develop thickness>60mm,yield strength>550MPa high-strength steel plate,the effects of heat treatment process on the microstructure and mechanical propert
信息时代中新媒体利用光电技术对汉字设计及其艺术表现产生了深刻影响。本文试从汉字字体设计表现形式和字体形态两方面入手揭示新媒体中汉字设计表现形式特点和发展趋势。
青海省拥有得天独厚的盐湖资源,且以富含铯等稀贵元素而著称,尽管盐湖卤水中的铯资源储量可观,但其浓度却很低,而且盐湖卤水成份复杂,共生元素的物理化学性质十分接近,给卤水中铯的分离提取带来很大的困难。借助金属离子印迹技术可以实现水溶性金属离子的水相印迹和识别,金属离子印迹聚合物的出现大大提高了液相中金属离子的吸附选择性。据此本论文首先以铅离子为模板,探讨了表面磁性金属离子印迹聚合物的制备方法。在此基础
本试验采用已经运行了一年的模拟薏米人工湿地中为研究对象,研究重金属Cr在薏米人工湿地系统中的迁移及积累的研究。模拟薏米人工湿地分别采用污水处理或营养液处理。通过分析测出定两个系统(污水人工湿地处理系统、营养液人工湿地处理系统)出水中不同价态Cr含量和不同基质层次Cr形态的变化,研究重金属Cr在薏米人工湿地系统中的迁移及累积规律。研究结果如下:(1)种植薏米可降低人工湿地系统出水中Cr6+含量。在污
鹰嘴豆是维吾尔医常用的药材。维吾尔族用它治疗支气管炎、黏膜炎、霍乱、便秘痢疾、消化不良、肠胃气胀、毒蛇咬伤、糖尿病、性欲降低、皮肤瘙痒、高脂血症、中暑等疾病。在中医上,鹰嘴豆可以调节湿度,有止泻、解毒、壮身等作用,它的花可以治疗痢疾,浸泡水后服用可以治疗中药中毒和白带增多等。籽粒可做利尿剂、催奶剂,可治疗失眠、预防皮肤病等。
玻璃化是植物组织培养过程中普遍发生的一种生理失调和形态畸变现象,玻璃化苗无法正常增殖及生根,严重影响试管苗的产量和质量。从生理生化及分子水平研究玻璃化苗的变化,对玻璃
主要组织相容性抗原复合体(MHC)是一种存在于脊椎动物中的由一个庞大的基因家族编码的细胞表面分子,介导白细胞,也就是常说的免疫细胞与其它白细胞或体细胞间的相互作用,在机体
Ultra-high strength steels are materials of considerable interest for automotive and structural applications and are increasingly being used in those areas.
Continuous cooling transformation diagrams and microstructures of coarse grain heat-affected zone(CGHAZ)of V-N-Ti and Nb-V-Ti microalloyed steels at differe
Rolling force model is very important during the rolling process.The accuracy of the model not only affect the formulation of rolling process,the equipment