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首页> 外文期刊>International Journal of Metalcasting: Leading the Transfer of Research and Technology for the Global Metalcasting Industry >DETERMINATION ON THE EFFECT OF TIN CONTENT ON MICROSTRUCTURE, HARDNESS, OPTIMUM AGING TEMPERATURE AND AGING TIME FOR SPINODAL BRONZE ALLOYS CAST IN METAL MOLD
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DETERMINATION ON THE EFFECT OF TIN CONTENT ON MICROSTRUCTURE, HARDNESS, OPTIMUM AGING TEMPERATURE AND AGING TIME FOR SPINODAL BRONZE ALLOYS CAST IN METAL MOLD

机译:金属模具铸造型青铜合金锡含量对微观结构,硬度,最佳老化温度和老化时间的测定

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摘要

A study was conducted to determine the effect of tin content on microstructure, hardness, optimum aging temperature and aging time of spinodal bronze alloys cast in metal mold. Copper, nickel and tin with appropriate compositions were melted in an electric furnace under argon atmosphere and were cast into metal molds. The cast specimens were solutionized at 825 degrees C for 10 h and were aged at 250, 300, 350, 400 and 450 degrees C for 1-5 h. The solutionized and aged specimens were subjected for microstructural evaluation and hardness testing. It was observed that the grain boundary precipitates form upon over-aging. The peak hardness increases with increase in tin content from 4 to 12 wt% in solutionized and aged condition. The peak aging time was found to remain a constant with increase in Sn content. The optimum aging temperature and aging time were also determined for spinodal bronze alloys cast in metal mold.
机译:进行了一种研究以确定锡含量对金属模具铸造的微观结构,硬度,最佳老化温度和老化时间的影响。 具有适当组合物的铜,镍和锡在氩气氛下在电炉中熔化,并浇铸成金属模具。 将铸造试样在825℃下溶液10小时,在250,300,350,400和450℃下老化1-5小时。 对溶解剂和老化的标本进行微观结构评估和硬度测试。 观察到晶粒边界在过度衰老时沉淀。 在溶液和老化条件下,峰值硬度随锡含量增加到4-12重量%。 发现峰值老化时间随着SN含量的增加而保持恒定。 还测定最佳老化温度和老化时间,用于金属模具中浇铸的旋转晶膜青铜合金。

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