热模锻造火次对GH4133A高温合金拉伸性能的影响.pdfVIP

热模锻造火次对GH4133A高温合金拉伸性能的影响 姚泽坤。吴泽，宁永权，岳太文，郭鸿镇 西北工业大学材料学院，西安，710072 摘要：本文对GH4133A高温合金多火次热模锻造试样的晶粒度、室温与700C高温拉伸性能进行了研究， 实验结果表明，分别以10％的小变形量和以30％的中等变形量在108013温度下3火变形后，室温拉伸强度 各火次熟模锻造的试祥的700C高温拉伸强度和塑性均低于其它条件变形试样的强度和塑性，尽管它们可 能有着相同的晶粒度级别；而且塑性不随晶粒度级别提高而增加，造成此现象的原因除与大小晶粒的分布 有关外，还与各火次变形试样在拉伸过程中滑移、孪晶变形晶粒参与量和各变形阶段时间长短有关。 关键词：GH4133A高温合金；热模锻造；火次：拉伸性能 abstract：Theeffectsof numberinhot·die 011 finenessnumberandtensile at grain heating forging properties room and700℃havebeen forGH4133A resultsshows1bat of temperature investigated superalloy．The s仃en6r[h 30％deformation∞threEnumberhot-die in1080℃fifethenin with10％and heating forged higher samples inloom tensiletestareidentifiable 1160℃atroom tensiletha fortwo temperaturetesL plasticitiestemperaturo that and with10％deformationasnlree numbers and heating forgingtemperaturesstrengthsplasticitiesofsamples hot-die thenotherconditiomaShot-die their finenessnumbersa『e atelower grain forged forged．although as increase．Thereasonseattsedthese identical．Theirdonotincrease finenessnumber plasticities grain of twin t0sizeanddistributionof into numbers and Canberelated grains，togo grain sliding phenomena andtime andtwindeformation． deformation ofgrainsliding number；tensileproperty Keywords：GH4133AsuperaUoy；hot-dieforging；heating GH4133A高