热等静压对一种单晶高温合金组织的影响
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- 英文论文题名：Effect of Hot Isostatic Pressing on the Microstructure of a Single Crystal Superalloy
- 论文作者：史振学 ; 岳晓岱 ; 刘世忠 ; 王效光 ; 李嘉荣
- 英文论文作者：Shi Zhenxue ; Yue Xiaodai ; Liu Shizhong ; Wang Xiaoguang ; Li Jiarong ; Science and Technology on Advanced High Temperature Structural Materials Laboratory ; Beijing Institute of Aeronautical Materials
- 年：2015
- 作者机构：北京航空材料研究院先进高温结构材料重点实验室;
- 论文关键词：单晶高温合金 ; 热等静压 ; 显微组织
- 英文论文关键词：single crystal superalloy ; hot isostatic pressing ; microstructure
- 会议召开时间：2015-05-20
- 会议录名称：第十三届中国高温合金年会论文集
- 英文会议录名称：Proceedings of the 13th China Superalloys Conference
- 语种：中文
- 分类号：TG132.3
- 学会代码：ZGJS
- 会议名称：第十三届中国高温合金年会
- 会议地点：中国北京
- 主办单位：中国金属学会高温材料分会
- 学会名称：中国金属学会
- 页数：4
- 文件大小：2336k
- 原文格式：O
- 会议级别：全国
摘要
在高温度梯度真空定向凝固炉中,采用螺旋选晶法制备了[001]取向的单晶高温合金,在1310℃/100MPa和1310℃/150MPa条件下分别对合金进行热等静压处理,然后再进行合金的标准热处理,采用光学显微镜、电子探针、扫描电镜研究了热等静压工艺对单晶高温合金组织的影响。结果表明,热等静压减少了合金的显微疏松和共晶含量;随着压力增加,显微疏松和共晶含量也相应减少。热等静压减轻了合金元素的枝晶偏析;随着压力的增加,枝晶偏析程度降低。热等静压后,热处理组织的γ′相尺寸稍有减小,均匀化和立方化程度提高。
A single crystal superalloy with[001]orientation was cast in the directionally solidified furnace.The hot isostatic pressing(HIP) was applied at the condition of 1310℃/110 MPa and 1310℃/150 MPa.The standard heat treatment was carried out after HIP.The effect of HIP on the microstructure of the alloy has been investigated using by using optical microscope(OM),scanning electron microscope(SEM) and electron microprobe analyzer(EPMA).The results showed that the volume fraction of microporosity and γ/γ' eutectic decreases,and with increasing of pressing,the volume fraction of those decreases too.The element segregation extent all decrease after HIP and with increasing of pressing.The size of γ'phase after standard heat treatment decreases and becomes uniform and its cubic shape turns a little regular with HIP.
A single crystal superalloy with[001]orientation was cast in the directionally solidified furnace.The hot isostatic pressing(HIP) was applied at the condition of 1310℃/110 MPa and 1310℃/150 MPa.The standard heat treatment was carried out after HIP.The effect of HIP on the microstructure of the alloy has been investigated using by using optical microscope(OM),scanning electron microscope(SEM) and electron microprobe analyzer(EPMA).The results showed that the volume fraction of microporosity and γ/γ' eutectic decreases,and with increasing of pressing,the volume fraction of those decreases too.The element segregation extent all decrease after HIP and with increasing of pressing.The size of γ'phase after standard heat treatment decreases and becomes uniform and its cubic shape turns a little regular with HIP.
引文
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[2]胡壮麒,刘丽荣,等.镍基单晶高温合金的发展[J].航空发动机,2005,31(3):1~7.
[3]Shi Z X,Li J R,et aL High cycle fatigue behavior of the second generation single crystal superalloy DD6[J].Transactions of Nonferrous Metals Society of China,2011,21:998~1003.
[4]Marchionni M,Goldschmidt D,et al.High temperature mechanical properties of CMSX4+Yttrim single crystal Nickelbase superalloy.[C].Antolovich S D,et al.eds.Superalloys 1992,Pennsylvania:TMS,1992:775~784.
[5]Wasson A J,Fuchs G E.The Effect of Carbide Morphologies on Elevated Temperature Tensile and Fatigue Behavior of a Modified Single Crystal Ni-Base Superalloy[C].Reed R C,et al.eds.Superalloys 2008,Pennsylvania:TMS,2008:489~497.
[6]Ludvfk K,Petr L,et al.Casting defects and high temperature fatigue life of IN 713LC superalloy[J].International Journal of Fatigue,2012,41:47~51.
[7]汤鑫,刘发信,等.细晶铸造K403合金热等静压及热处理工艺研究[J].航空材料学报,2003,23(增刊):45~50.
[8]盖其东,李相辉,等.热等静压处理对151792材料组织和持久性能的影响[J].硅酸盐通报,2012,31(3):693~696.
[9]Zhou Y,Rao S X,et al.Interaction of hot isostatic pressing temperature and hydrostatic pressure on the healing of creep cavities in a nickel-based superalloy[J].Materials and Design,2013,49:25~27.
[10]Zhou Y,Zhang Z,et al.Healing behaviour of creep induced cavities during hot isostatic pressing of nickel based superalloy[J].Materials Science and Technology,2012,28(8):1018~1021.
[11]闫来成,燕平,等.镍基高温合金HIP扩散连接的组织和性能[J].钢铁研究学报,2012,24(1):48~53.
[12]Fritzemeier L G.The influence of high thermal gradient casting,hot isostatic pressing and alternate heat treatment on the structure and properties of a single crystal nickel base superalloy[C],Reichman S,et al.eds.Superalloysl988,Warrendale:TMS,1988:265~274.
[13]韩梅,骆宇时.热等静压对DD3单晶高温合与性能的影响[J].材料工程,2008,(8):40~43.
[14]曹腊梅,刘丽君,等.热等静压温度对第三代单晶高温合金DD10组织的影响[J].材料工程,2013,(6):1~5.
[15]Reed R C,Cox D C,et al.Damage accumulation during creep deformation of a single crystal superalloy at 1150℃[J].Materials Science and Engineering A,2007,448:88~96.
[16]Chang J C,Yun Y H,et al.Development of Microstructure and Mechanical Properties of a Ni-Base Single-Crystal Superalloy by Hot-Isostatic Pressing[J].Journal of Materials Engineering and Performance,2003,10(3):420~425.
[17]林惠文,周亦胄,等.一种含Pt镍基单晶高温合金的凝固行为[J].金属学报,2013,49(12):1567~1572.
[18]Yu J J,Sun X F,et al.Effect of heat treatment on microstructure and stress rupture life of DD32 single crystal Nibase superalloy[J].Materials Science and Engineering A,2007,460~461:420~427.