【摘 要】
：
The CCT curves of supercooled austenite were investigated by using THERMECMASTOR-Z simulation machine, test samples refined from 50 kg vacuum induction furnace
【机 构】
：
School of Material Science and Engineering,Wuhan Engineering Institute
论文部分内容阅读
The CCT curves of supercooled austenite were investigated by using THERMECMASTOR-Z simulation machine, test samples refined from 50 kg vacuum induction furnace and two-stage controlled rolling in laboratorial condition.Test results show that influence of cerium (Ce) addition in low sulfur Nb-Ti-Bearing steel is as follows: Ce can increase the transformation point tAr3 and tAr1, enlarge the interval of transformation (tAr3-tAr1). Ce moves CCT curves upwards and rightwards, and reduces hardenability. Ce increases bainitic transformation temperature and enlarges interval of bainite formation. With higher cooling rates, Ce changes the martensite from coarse strip to fine strip. It decreases Ms, enhances the trend of lath martensitic structure and limits the formation of lamellar crystal.
其他文献
Silicon dioxide (SiO2) films were prepared on sapphire (α-Al2O3) by radio frequency magnetron reactive sputtering in order to in crease both transmission and r
Absorption of gaseous species into stationary droplets is a fundamental interest of mass transfer between liquid droplets and ambient gas, which plays a key rol
Single-phase homogeneous Ce1- xZrxO2 solid solutions with various compositions were synthesized using the reversed microemulsion method. The structural properti
Various micro-mechanical and micro-structural influences on fatigue crack growth resistance of the material have been investigated over the years. It is widely
The reduction mechanism of stainless steelmaking dust and carbon pellets was investigated. The metal oxides present in the dust were reduced by carbon with a ne
SiCf/Ti-6Al-4V composites were fabricated by the powder-coated fiber method. The precursor fiber was prepared under the optimized parameter, and the composites
Mixture of green petroleum coke, B4C and SiC together with short carbon fiber were employed as starting materials, the mixture was press-formed without any bind
Sapphire crystals with different orientations may cone from implantation of Nb+ ions under different conditions and succedent annealing at reducing atmosphere.
Extraction of the Ligusticum Chuanxiong oil with supercritical CO2 (SC-CO2) was investigated at the temperatures ranging from 55℃ to 70℃ and pressure from 25
Network-induced delay and jitter are key factors causing performance degradation and instability of NCSs (networked control systems). The relationships between