Influence of Solution Temperature on Microstructure and Mechanical Properties of Directionally Solidified Superalloy DZ22
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG1989年第1期
论文作者：陈荣章 王罗宝 王玉屏
文章页码：14 - 18
摘 要：<正> The microstructure changed markedly withincreasing solution temperature, i.e eutecticγ’ phases and coarse primary γ’ phase areredissolved continuously into matrix, whichwas finished at 1250-1260℃, and more and finerγ’ phases are reprecipitated. The grain boundarymorphology changed gradually to "fine line"form. The dendritic segregation of elementsdecreased. With raising solution temperaturethe longitudinal stress-rupture life at highand intermediate temperature were enhanced,but the transversal stress-rupture life atintermediate temperature decreased obviously.The incipient melting temperature of DZ22 alloywas measured to be 1230-1240℃ and may beincreased by homogenization at 1150℃. In thispaper the principle of determining solutiontemperature of DS alloys was discussed. Itwas suggested that the solution temperatureof alloy DZ22 selected at 1200-1210℃ is appropri-ate.
陈荣章，王罗宝，王玉屏
摘 要：<正> The microstructure changed markedly withincreasing solution temperature, i.e eutecticγ’ phases and coarse primary γ’ phase areredissolved continuously into matrix, whichwas finished at 1250-1260℃, and more and finerγ’ phases are reprecipitated. The grain boundarymorphology changed gradually to "fine line"form. The dendritic segregation of elementsdecreased. With raising solution temperaturethe longitudinal stress-rupture life at highand intermediate temperature were enhanced,but the transversal stress-rupture life atintermediate temperature decreased obviously.The incipient melting temperature of DZ22 alloywas measured to be 1230-1240℃ and may beincreased by homogenization at 1150℃. In thispaper the principle of determining solutiontemperature of DS alloys was discussed. Itwas suggested that the solution temperatureof alloy DZ22 selected at 1200-1210℃ is appropri-ate.
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