Please wait a minute...
Acta Metall Sin  1989, Vol. 25 Issue (5): 5-14    DOI:
Current Issue | Archive | Adv Search |
PLASTIC DEFORMATION AND DISLOCATION STRUCTURE IN γ'-PHASE OF A DIRECTIONALLY SOLIDIFIED Ni-BASE SUPERALLOY
WEN Mao;LIN Dongliang T. L. Lin Shanghai Jiaotong University LIN Dongliang; professor; Shanghai liaotong University; 200030 Shonghai
Cite this article: 

WEN Mao;LIN Dongliang T. L. Lin Shanghai Jiaotong University LIN Dongliang; professor; Shanghai liaotong University; 200030 Shonghai. PLASTIC DEFORMATION AND DISLOCATION STRUCTURE IN γ'-PHASE OF A DIRECTIONALLY SOLIDIFIED Ni-BASE SUPERALLOY. Acta Metall Sin, 1989, 25(5): 5-14.

Download:  PDF(3653KB) 
Export:  BibTeX | EndNote (RIS)      
Abstract  The dislocation substructure of directionally solidified DS Rene 80superalloy during tensile deformation and during creep deformation has been studied byTEM. In tensile deformation, γ' shearing occurs by slip of APB-coupled 1/2<110>dislocation pairs on {111} planes at temperature below 760℃, and by slip ofSISF separated 1/3<112> superpartials which have dissociated on {111} planes intoa 1/2<110> screw superpartial and a 1/6<112> edge superpartial with an APB inbetween at temperatures above or equal to 760℃. In creep deformation, γ' shearingoccurs again by slip of SISF-separated 1/3<112> superpartials which have not dis-sociated on {111} planes and by diffusive slip of APB-coupled 1/2<110> disloca-tion pairs at 760℃ under a stress of 618 MPa. However, no γ' shearing occurs at980℃ under a stress of 190 MPa. During secondary creep at 760℃, 618 MPa orat 980℃, 190 MP8, walls of dislocations have been formed at γ/γ' interfaces, strainis controlled by climb of 2-dimensional dislocation netwotks at γ/γ' interfaces.The dependence of secondary creep rate, ε, upon size, α, and volume fraction, V_f,of cubic γ' has been found to be ε ∝ α/V_f~(2/3).
Key words:  directional solidification      Ni-base superalloy      plastic deformation      r'-phase     
Received:  18 May 1989     
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/Y1989/V25/I5/5

1 Leverant G R, Gell W, Hopkins S W. Mater Sci Eng, 1971; 8: 125
2 Kear B H. Levdrant G R, Oblak J M. ASM Trans Q, 1969; 62: 639
3 Leverant G R, Kear B H. Metall Trans, 1970; 1: 491
4 Kear B H, Oblak J M, Giamei A F. Metall Trans, 1970; 1: 2477
5 Leverant G R, Kear B H, Oblak J M. Metall Trans, 1973; 4: 355
6 Condat M, Decamps B. Scr Metall, 1987; 21: 607
7 Yamaguchi M, Paidar V, Pope D P, Vitek V. Philos Mag, A, 1982; 45: 867
8 Paidar V, Yamaguchi M, Pope D P, Vitek V. Philos Mag, A, 1982; 45: 883
9 林栋梁·金属学报,1981;17:26
10 林栋梁,姚德良,林先进,孙传琪.金属学报,1982;18:10
[1] MA Dexin, ZHAO Yunxing, XU Weitai, WANG Fu. Effect of Gravity on Directionally Solidified Structure of Superalloys[J]. 金属学报, 2023, 59(9): 1279-1290.
[2] 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.
[3] ZHANG Haifeng, YAN Haile, FANG Feng, JIA Nan. Molecular Dynamic Simulations of Deformation Mechanisms for FeMnCoCrNi High-Entropy Alloy Bicrystal Micropillars[J]. 金属学报, 2023, 59(8): 1051-1064.
[4] WAN Tao, CHENG Zhao, LU Lei. Effect of Component Proportion on Mechanical Behaviors of Laminated Nanotwinned Cu[J]. 金属学报, 2023, 59(4): 567-576.
[5] SU Zhenqi, ZHANG Congjiang, YUAN Xiaotan, HU Xingjin, LU Keke, REN Weili, DING Biao, ZHENG Tianxiang, SHEN Zhe, ZHONG Yunbo, WANG Hui, WANG Qiuliang. Formation and Evolution of Stray Grains on Remelted Interface in the Seed Crystal During the Directional Solidification of Single-Crystal Superalloys Assisted by Vertical Static Magnetic Field[J]. 金属学报, 2023, 59(12): 1568-1580.
[6] LI Yanqiang, ZHAO Jiuzhou, JIANG Hongxiang, HE Jie. Microstructure Formation in Directionally Solidified Pb-Al Alloy[J]. 金属学报, 2022, 58(8): 1072-1082.
[7] GUO Xiangru, SHEN Junjie. Modelling of the Plastic Behavior of Cu Crystal with Twinning-Induced Softening and Strengthening Effects[J]. 金属学报, 2022, 58(3): 375-384.
[8] REN Shaofei, ZHANG Jianyang, ZHANG Xinfang, SUN Mingyue, XU Bin, CUI Chuanyong. Evolution of Interfacial Microstructure of Ni-Co Base Superalloy During Plastic Deformation Bonding and Its Bonding Mechanism[J]. 金属学报, 2022, 58(2): 129-140.
[9] CHEN Ruirun, CHEN Dezhi, WANG Qi, WANG Shu, ZHOU Zhecheng, DING Hongsheng, FU Hengzhi. Research Progress on Nb-Si Base Ultrahigh Temperature Alloys and Directional Solidification Technology[J]. 金属学报, 2021, 57(9): 1141-1154.
[10] SHI Zengmin, LIANG Jingyu, LI Jian, WANG Maoqiu, FANG Zifan. In Situ Analysis of Plastic Deformation of Lath Martensite During Tensile Process[J]. 金属学报, 2021, 57(5): 595-604.
[11] LIN Pengcheng, PANG Yuhua, SUN Qi, WANG Hangduo, LIU Dong, ZHANG Zhe. 3D-SPD Rolling Method of 45 Steel Ultrafine Grained Bar with Bulk Size[J]. 金属学报, 2021, 57(5): 605-612.
[12] CAO Qingping, LV Linbo, WANG Xiaodong, JIANG Jianzhong. Magnetron Sputtering Metal Glass Film Preparation and the “Specimen Size Effect” of the Mechanical Property[J]. 金属学报, 2021, 57(4): 473-490.
[13] ZHANG Xiaoli, FENG Li, YANG Yanhong, ZHOU Yizhou, LIU Guiqun. Influence of Secondary Orientation on Competitive Grain Growth of Nickel-Based Superalloys[J]. 金属学报, 2020, 56(7): 969-978.
[14] CHEN Yongjun, BAI Yan, DONG Chuang, XIE Zhiwen, YAN Feng, WU Di. Passivation Behavior on the Surface of Stainless Steel Reinforced by Quasicrystal-Abrasive via Finite Element Simulation[J]. 金属学报, 2020, 56(6): 909-918.
[15] CHEN Xiang,CHEN Wei,ZHAO Yang,LU Sheng,JIN Xiaoqing,PENG Xianghe. Assembly Performance Simulation of NiTiNb Shape Memory Alloy Pipe Joint Considering Coupling Effect of Phase Transformation and Plastic Deformation[J]. 金属学报, 2020, 56(3): 361-373.
No Suggested Reading articles found!