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首页> 外文期刊>International Journal of Chemistry and Chemical Engineering >Effect of Holding Time on Strength and Abrasion Resistance of Cu-Ni-Mn Alloyed Permanent Molded Toughened Austempered Ductile Iron For Automotive Gear Applications.
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Effect of Holding Time on Strength and Abrasion Resistance of Cu-Ni-Mn Alloyed Permanent Molded Toughened Austempered Ductile Iron For Automotive Gear Applications.

机译：Cu-Ni-Mn合金永久模塑增韧韧性韧性韧性耐延长韧性耐磨性耐力耐磨性耐磨性耐磨性的影响。

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摘要

Dry sand abrasion and erosion tests on permanent molded austempered ductile iron (ADI) samples subjected to special austempering heat treatment (QB1 process) are being studied and reported. The oil quenched permanent moulded ductile iron samples were re-heated and held at (a+y) temperature range prior to austempering in a salt bath resulting in permanent moulded toughened austempered ductile iron (PMTADI). The PMTADI samples were alloyed with 1% each of copper, nickel and manganese content. The holding time in the (a+y) temperature range were varied at 60, 90, 120 and 150 minutes. Results indicated that the abrasion resistance was highest for 1% Cu-Ni-Mn alloyed PMTADI samples subjected to 120 minutes holding time in the (a+y) temperature range. The retained austenite content and the distribution of bainite in the matrix played a major role on the abrasion resistance of PMTADI. There was about 12% increase in the abrasion resistance for 1% Cu-Ni-Mn PMTADI samples as compared to unalloyed PMTADI samples and about 22% increase in abrasion resistance than as cast ductile iron samples. The optimum holding time in the (a+y ) temperature range for enhanced abrasion resistance was found to be 120 minutes. The results were analyzed based on structure property correlations and the distribution of bainite.
机译：正在研究并报道干燥的砂砂和对经过特殊的奥斯特术热处理（QB1工艺）进行的永久模塑型延性铸铁（ADI）样品进行侵蚀试验。在盐浴中奥斯特浴前奥氏体锻炼之前重新加热并保持在（A + Y）温度范围内的油淬灭的永久模塑的球墨铸铁样品。 PMTADI样品用1％的铜，镍和锰含量合金化。 （A + Y）温度范围内的保持时间在60,90,120和150分钟内变化。结果表明，在（A + Y）温度范围内为120分钟保持时间的1％Cu-Ni-Mn合金PMTADI样品的耐磨性最高。保留的奥氏体含量和基质中的贝氏体分布在PMTADI的耐磨性上发挥了重要作用。与未合金化的PMTADI样品相比，1％Cu-Ni-MnMTADI样品的耐磨性增加约12％，耐磨性约为22％，而不是浇铸延性铁样品。 （A + Y）温度范围内的最佳保持时间被发现为120分钟。基于结构性质相关和贝氏体分布分析结果。

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