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您的检索式：作者名="Semih Kalay"
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| 1 | New rail steels for the 21st century显示文摘 | Robtes Hernandez F C Kalay Semih Ordonez Olivares R | 2008 | Railway Track and Structures2008，104，： | 1 |
| 2 | New pearlitic steels for 21st century rail applications显示文摘To improve competitiveness,the nation’s railroads have increased the axle loads and speed of the trains.This has led to a rapid decrease in the life expectancy of premium rails through accelerated wear,rolling contact fatigue and fracture.To counter this effect,the railroads need rails that exhibit better performance in these areas.A research program has been initiated to study the microstructural aspects of near-eutectoid steels that would improve these properties.The first phase of the work was to carefully characterize the existing commercial rail steels in terms of pearlite interlamellar spacing,steel cleanliness and the presence of pro-eutectoid cementite on prior-austenite boundaries.These characterizations were then correlated with both mechanical properties and overall rail performance.The second phase of the program was to develop a better microstructure through control of composition,thermomechanical processing and cooling path.This was achieved through the use of laboratory-melted heats of experimental near-eutectoid compositions and a computer controlled MTS compression machine modified for axisymmetric compression testing and subsequent controlled cooling.The optimum processing route for these new steels has been determined,and pilot-scale heats have been melted,hot rolled and cooled using the information gained from the MTS investigations.The mechanical properties of these new steels have been determined and the rail performance tests are being conducted using laboratory-scale evaluation.Ultimately,these new rail steels will be tested under commercial conditions on the TTCI test track in Pueblo,Colorado.This paper will report on the alloy and processing design and resulting properties of the steels developed in this research program.Guidelines for future rail compositions and processing to obtain improved properties and performance will be presented. | R ORDONEZ C Isaac GARCIA Semih KALAY Anthony J DEARDO | 2010 | Baosteel Technical Research2010，4，S1： | 1 |
| 3 | 货车车辆安全检测新技术展望显示文摘货车车辆机器图像检测技术的开发不仅提高了货车车辆安全检测的质量与效率.同时也提高了车辆的安全性、降低了成本、提高了生产率。随着新技术的不断涌现.具有互联网数据处理能力的车辆检测装置大量出现.品种繁多。根据最新报道, | Semih Kalay James Robeda 宋文伟(译) | 2011 | 世界轨道交通2011，，3： | 0 |
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