CREEP BEHAVIOR OF AN EASY ORIENTED Ti-48Al PST CRYSTAL

CREEP BEHAVIOR OF AN EASY ORIENTED Ti-48Al PST CRYSTAL

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摘要ＣＲＥＥＰＢＥＨＡＶＩＯＲＯＦＡＮＥＡＳＹＯＲＩＥＮＴＥＤＴｉ－４８ＡｌＰＳＴＣＲＹＳＴＡＬ￥ＬｉｎＪｉａｎｇｕｏ；ＺｈｏｕＹａｊｉａｎ；ＺｈａｎｇＹｏｎｇｇａｎｇ；ＣｈｅｎＣｈａｎｇｑｉ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎ... The creep deformation behavior of an easy oriented PST crystal was investigated at 800 degrees C in compression creep. The stress range was 120 MPa to 200 MPa. The creep curves showed a steady state stage. The application of a power-law equation led to a stress exponent n = 6.6 and the creep activation energy Q(c) = 282 kJ/mol, which indicated that dislocation climb controlls creep mechanism. TEM observation of the crept samples at steady state regime showed the formation of substructures in some gamma plates.

作者 Lin Jianguo Zhou Yajian Zhang Yonggang Chen Changqi(Department of Materials Science and Engineering)(Beijing University of Aeronautics and Austronautics,Beijing 100083)

出处《中国有色金属学会会刊：英文版》 CSCD 1996年第4期82-86,共5页 Transactions of Nonferrous Metals Society of China

关键词 TIAL alloy PST CRYSTAL CREEP behavior TiAl alloy PST crystal creep behavior

分类号 TG146.2 [金属学及工艺—金属材料]

引文网络
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1Lin Jianguo, Zhang Yonggang and Chen Changqi Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, P. R. China.EFFECTSOFLAMELLARBOUNDARIESONCREEPBEHAVIOROFPSTCRYSTALSOFTiAlALLOYS[J].中国有色金属学会会刊：英文版,1998,8(4):31-35. 被引量：1
2Lu, Yonghao, Zhang, Yonggang, Chen, Changqi.IN-SITU OBSERVATION OF CRACK PROPAGATION IN PST CRYSTALS OF Ti-49% AlALLOY[J].中国有色金属学会会刊：英文版,1999,9(1):65-71.
3Yonghao Lu,Lijie Qiao,Yanbin ining,chang Chu(Material Science and Engineering School, University of Science and Technology’ Beijing, Beijing 100083, China).Effect of Lamellar Orientation on Crack Paths in PST Crystals of γ-TiAl BasedAlloys[J].International Journal of Minerals,Metallurgy and Materials,1999,13(4):272-276.
4刘喜波,关逊,陈荣石,韩恩厚.Creep behavior of ageing hardened Mg-10Gd-3Y alloy[J].Transactions of Nonferrous Metals Society of China,2010,20(B07):545-549. 被引量：1
5W.M.Yin 1,2 , V.Lupinc 2, L.Z.Zhou 1, M. Maldini 2 and J.T.Guo 1 1 Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China 2 CNR TEMPE, Via Cozzi 53, Milan 20125, Italy.CREEP BEHAVIOR OF ACASTγTiAl BASEALLOY[J].中国有色金属学会会刊：英文版,1999,9(S1):274-279.
6Y.G. Zhang,J.G. Lin,Y.J. Zhou and C.Q. Chen(Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics,Beijing 100083, China.CREEP BEHAVIOR OF γ-TiAl POLYSYNTHETICALLY TWINNED CRYSTALS[J].Acta Metallurgica Sinica(English Letters),1996,9(6):577-583. 被引量：2
7刘毅,林栋梁,汪德宁,陈达,陈世朴,刘治国,孟祥康,.PST双相TiAl类单晶室温变形位错特征[J].金属学报,1996,32(5):449-455. 被引量：2
8Y.G. Zhang, J.G. Lin and C.Q. Chen Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China.ORIENTATION EFFECTS ON CREEP OF A LAMELLARTiAl ALLOY[J].中国有色金属学会会刊：英文版,1999,9(S1):280-284.
9Y.Umakoshi,T. Nakano and H .Y. Yasuda (Department of Materials Science and Engineering, Faculty of Engineering, Osaka University, 2-1, Yamada-Oka, Suita, Osaka 565 Japan).DEFORMATION　AND　FRACTURE　OF　TiAl　PST　CRYSTALS　UNDER　MONOTONIC　AND　CYCLIC　LOADING[J].Acta Metallurgica Sinica(English Letters),1995,8(Z1):329-338. 被引量：3
10刘毅,林栋梁,汪德宁,陈达,陈世朴,刘治国,孟祥康,.PST双相TiAl类单晶高温变形位错特征[J].金属学报,1996,32(5):456-461.

中国有色金属学会会刊：英文版

1996年第4期

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CREEP BEHAVIOR OF AN EASY ORIENTED Ti-48Al PST CRYSTAL

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