Acta Metall Sin  1995, Vol. 31 Issue (12): 531-536    DOI:

Current Issue | Archive | Adv Search |

DIRECTIONAL COARSENING OF γ'PRECIPITATES IN A SINGLE CRYSTAL NICKEL BASE SUPERALLOY

PENG Zhifang (Wuhan University of Hydraulic and Electric Engineering; Wuhan 430072); GLATZEL Uwe; FELLER-KNIEPMEIER Monika(Technische Universitat Berlin; Germany)

PENG Zhifang (Wuhan University of Hydraulic and Electric Engineering; Wuhan 430072); GLATZEL Uwe; FELLER-KNIEPMEIER Monika(Technische Universitat Berlin; Germany). DIRECTIONAL COARSENING OF γ'PRECIPITATES IN A SINGLE CRYSTAL NICKEL BASE SUPERALLOY. Acta Metall Sin, 1995, 31(12): 531-536.

Abstract References Related Articles Recommended Metrics Download:  PDF(485KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The coarsening of γ'precipitates along the direction perpendicular to the externally applied stress axis was investigated for [001]-oriented single crystal superalloy CMSX-4 under 1253 K, 350 MPa tensile creep test. It is found that the portion of edge areas of cuboidal γ'precipitates grew preferentially and the γ-γ'interfaces progressed concavely,which was followed by the enclosure of the adjacent vertical matrix channels (parallel to [001]), and the linked γ'precipitates gradually exhauseted the retained vertical channels and finally developed into rafted plates. The directional coarsening led to a decrease in the size of γ'precipitates in the [001] direction and to an increase in the width of the horizontal matrix channels (perpendicular to[001]). The specific growth manner of the γ'precipitates and the characteristics of the morphological evolution of the two coherent phases in the tested samples are discussed. Key words:  single crystal superalloy      high-temperature creep      directional coarsening      CMSX-4      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1995/V31/I12/531 1TienJK,CoplySM．MetallTrans,1971;2:2152NathalMV,EbertLJ．ScriptaMetall,1983:17,11513MackayRA,EbertLJ．ScriptaMetall,1983:17,12174Feller-KniepmeierM,LinkT．MetallTrans,1989;20A:12335GaydaJ,MackayRA．ScriptaMetall,1989;23:18356SchmidtR,Feller-KniepmeierM．ScriptaMetalletMater,1993;29:10797SocrateS,ParksDM．ActaMetallMater,1993;41(7):21858PollockTM,ArgonAS．ActaMetallMater,1994;42(6):18599郭喜平,傅恒志,孙家华.金属学报,1994;30(7):A32110GlatzelU．MicrostructureandInternalStrainsofUndeformedandCreepDeformedSamplesofaNickel-BaseSuperalloyBerlin:VerlagDr．Koster,1994:17" [1] LI Jiarong, DONG Jianmin, HAN Mei, LIU Shizhong. Effects of Sand Blasting on Surface Integrity and High Cycle Fatigue Properties of DD6 Single Crystal Superalloy[J]. 金属学报, 2023, 59(9): 1201-1208. [2] LU Nannan, GUO Yimo, YANG Shulin, LIANG Jingjing, ZHOU Yizhou, SUN Xiaofeng, LI Jinguo. Formation Mechanisms of Hot Cracks in Laser Additive Repairing Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1243-1252. [3] ZHAO Peng, XIE Guang, DUAN Huichao, ZHANG Jian, DU Kui. Recrystallization During Thermo-Mechanical Fatigue of Two High-Generation Ni-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1221-1229. [4] ZHANG Jian, WANG Li, XIE Guang, WANG Dong, SHEN Jian, LU Yuzhang, HUANG Yaqi, LI Yawei. Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys[J]. 金属学报, 2023, 59(9): 1109-1124. [5] WANG Di, HE Lili, WANG Dong, WANG Li, ZHANG Siqian, DONG Jiasheng, CHEN Lijia, ZHANG Jian. Influence of Pt-Al Coating on Tensile Properties of DD413 Alloy at High Temperatures[J]. 金属学报, 2023, 59(3): 424-434. [6] ZHANG Zixuan, YU Jinjiang, LIU Jinlai. Anisotropy of Stress Rupture Property of Ni Base Single Crystal Superalloy DD432[J]. 金属学报, 2023, 59(12): 1559-1567. [7] MA Dexin, ZHAO Yunxing, XU Weitai, PI Libo, LI Zhongxing. Surface Effect on Eutectic Structure Distribution in Single Crystal Superalloy Castings[J]. 金属学报, 2021, 57(12): 1539-1548. [8] ZHANG Shaohua, XIE Guang, DONG Jiasheng, LOU Langhong. Investigation on Eutectic Dissolution Behavior of Single Crystal Superalloy by Differential Scanning Calorimetry[J]. 金属学报, 2021, 57(12): 1559-1566. [9] HE Siliang, ZHAO Yunsong, LU Fan, ZHANG Jian, LI Longfei, FENG Qiang. Effects of Hot Isostatic Pressure on Microdefects and Stress Rupture Life of Second-Generation Nickel-Based Single Crystal Superalloy in As-Cast and As-Solid-Solution States[J]. 金属学报, 2020, 56(9): 1195-1205. [10] LIU Jinlai, YE Lihua, ZHOU Yizhou, LI Jinguo, SUN Xiaofeng. Anisotropy of Elasticity of a Ni Base Single Crystal Superalloy[J]. 金属学报, 2020, 56(6): 855-862. [11] ZHAO Xu,SUN Yuan,HOU Xingyu,ZHANG Hongyu,ZHOU Yizhou,DING Yutian. Effect of Orientation Deviation on Microstructure and Mechanical Properties of Nickel-Based Single Crystal Superalloy Brazing Joints[J]. 金属学报, 2020, 56(2): 171-181. [12] HU Bin,LI Shusuo,PEI Yanling,GONG Shengkai,XU Huibin. Influence of Small Misorientation from <111> on Creep Properties of a Ni-Based Single Crystal Superalloy[J]. 金属学报, 2019, 55(9): 1204-1210. [13] LI Jiarong,XIE Hongji,HAN Mei,LIU Shizhong. High Cycle Fatigue Behavior of Second Generation Single Crystal Superalloy[J]. 金属学报, 2019, 55(9): 1195-1203. [14] ZHANG Jian,WANG Li,WANG Dong,XIE Guang,LU Yuzhang,SHEN Jian,LOU Langhong. Recent Progress in Research and Development of Nickel-Based Single Crystal Superalloys[J]. 金属学报, 2019, 55(9): 1077-1094. [15] Jinyao MA,Jin WANG,Yunsong ZHAO,Jian ZHANG,Yuefei ZHANG,Jixue LI,Ze ZHANG. Investigation of In Situ 1150 ℃ High Temperature Deformation Behavior and Fracture Mechanism of a Second Generation Single Crystal Superalloy[J]. 金属学报, 2019, 55(8): 987-996. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed