一种恢复热处理工艺对GH4145螺栓组织性能的影响
发布时间:
下半月出版Material&HeatTreatment材料热处理技术
恢复热处理对GH4145/SQ螺栓组织性能的影响
阎光宗1,柯浩1,徐雪霞1,孔维刚2
(1.河北省电力研究院,河北石家庄050021;2.神华河北国华定洲发电有限责任公司,河北定州07300摘要院对运行后硬度值超标的镍基合金GH4145/SQ螺栓进行恢复热处理袁并对恢复热处理前后的螺栓材料进行显微组织分析尧力学性能检验遥结果显示院硬度值超标的螺栓塑韧性较差袁恢复热处理后螺栓材料组织形貌及综合力学性能指标得到了明显改善遥
关键词院镍基合金曰恢复热处理曰显微组织曰力学性能中图分类号院TG166.7
文献标识码院A
文章编号院
EffectofRecoveryHeatTreatmentonMicrostructureandMechanical
PropertiesofGH4145/SQBoltMaterial
YANGuangzong1,KEHao1,XUXuexia1,KONGWeigang2
(1.HebeiElectricPowerResearchInstitute,Shijiazhuang050021,China;2.ShenhuaHebeiGuohuaDingzhouPowerGenerationCo.,Ltd.,Dingzhou073000,China
Abstract院Arecoveryheattreatmentwasusedonthenickle-basedalloyGH4145/SQboltwhosehardnessvaluewashigherthanthedemandofthestandardafterservice.Themicrostructureandmechanicalpropertiesoftheboltmaterialbeforeandaftertherecoveryheattreatmentwerestudied.Theresultsshowthattheplasticandtoughnessoftheboltwhosehardnessvaluewashigherthanthedemandofthestandardislower,andthemicrostructureandmechanicalpropertiesoftheboltmatrialareimprovedobviouslythroughtherecoveryheat