Acta Metall Sin  1988, Vol. 24 Issue (1): 51-54    DOI:

Current Issue | Archive | Adv Search |

CREEP CRACK GROWTH IN GH901 SUPER ALLOY

WU Sifa;KONG Qingping Institute of Solid State Physics; Academia Sinica; HefeiProfessor;Institute of Sotid State Physies;Academia Sinica;Hefei

WU Sifa;KONG Qingping Institute of Solid State Physics; Academia Sinica; HefeiProfessor;Institute of Sotid State Physies;Academia Sinica;Hefei. CREEP CRACK GROWTH IN GH901 SUPER ALLOY. Acta Metall Sin, 1988, 24(1): 51-54.

Abstract References Related Articles Recommended Metrics Download:  PDF(327KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Creep crack growth of an Fe-Ni base alloy GH901 (similar to Incoloy901) was studied at 650--715℃ by electrical potential technique. The crack initiationand growth can be described by stress intensity K_I. When the initial stressintensity K_(Ii) was smaller than a threshold value K_(It), no crack growth was detectedin the testing time (200h). When K_(Ii) was larger than K_(It), the creep crack growthrate can be represented by an Arrhenius type equation. The activation energy forcreep crack growth was found in agreement with that for grain boundary diffusion.Fractography by SEM shows that the path of crack growth is along grain bound-aries. The physical origin of the threshold stress intensity K_(It) and the microscopicprocess of creep crack growth was explained in the light of grain boundary diffusionmechanism. Key words:  GH901 alloy      creep      crack growth      Received:  18 January 1988      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/Y1988/V24/I1/51 1 孔庆平.金属学报,1977;13:231 2 Brown W F, Scrawloy J E. ASTM Spec Tech Publ, №410, 1969; 12 3 Johnson A H. Material Research and Standards, 1965; 5: 442 4 Sadananda K, Shahinian P. Eng Fract Mech, 1981; 15: 327 5 吴东棣.理化检验(物理分册),1984;20(2) :12 6 #12 7 Sadananda K. Shahinian P. Metall Trans, 1977; 8A: 439 8 Raj Rishi, Ashby M F. Acta Metall, 1975; 23: 65 [1] CHEN Jia, GUO Min, YANG Min, LIU Lin, ZHANG Jun. Effects of W Concentration on Creep Microstructure and Property of Novel Co-Based Superalloys[J]. 金属学报, 2023, 59(9): 1209-1220. [2] BAI Jiaming, LIU Jiantao, JIA Jian, ZHANG Yiwen. Creep Properties and Solute Atomic Segregation of High-W and High-Ta Type Powder Metallurgy Superalloy[J]. 金属学报, 2023, 59(9): 1230-1242. [3] FENG Qiang, LU Song, LI Wendao, ZHANG Xiaorui, LI Longfei, ZOU Min, ZHUANG Xiaoli. Recent Progress in Alloy Design and Creep Mechanism of γ'-Strengthened Co-Based Superalloys[J]. 金属学报, 2023, 59(9): 1125-1143. [4] QI Zhao, WANG Bin, ZHANG Peng, LIU Rui, ZHANG Zhenjun, ZHANG Zhefeng. Effects of Stress Ratio on the Fatigue Crack Growth Rate Under Steady State of Selective Laser Melted TC4 Alloy with Defects[J]. 金属学报, 2023, 59(10): 1411-1418. [5] LI Xiaolin, LIU Linxi, LI Yating, YANG Jiawei, DENG Xiangtao, WANG Haifeng. Mechanical Properties and Creep Behavior of MX-Type Precipitates Strengthened Heat Resistant Martensite Steel[J]. 金属学报, 2022, 58(9): 1199-1207. [6] GAO Chuan, DENG Yunlai, WANG Fengquan, GUO Xiaobin. Effect of Creep Aging on Mechanical Properties of Under-Aged 7075 Aluminum Alloy[J]. 金属学报, 2022, 58(6): 746-759. [7] PENG Zichao, LIU Peiyuan, WANG Xuqing, LUO Xuejun, LIU Jian, ZOU Jinwen. Creep Behavior of FGH96 Superalloy at Different Service Conditions[J]. 金属学报, 2022, 58(5): 673-682. [8] LI Xifeng, LI Tianle, AN Dayong, WU Huiping, CHEN Jieshi, CHEN Jun. Research Progress of Titanium Alloys and Their Diffusion Bonding Fatigue Characteristics[J]. 金属学报, 2022, 58(4): 473-485. [9] YANG Zhikun, WANG Hao, ZHANG Yiwen, HU Benfu. Effect of Ta Content on High Temperature Creep Deformation Behaviors and Properties of PM Nickel Base Superalloys[J]. 金属学报, 2021, 57(8): 1027-1038. [10] ZHANG Nizhen, MA Xindi, GENG Chuan, MU Yongkun, SUN Kang, JIA Yandong, HUANG Bo, WANG Gang. Effect of Adding Ag on the Nanoindentation Behavior of Cu-Zr-Al-Based Metallic Glass[J]. 金属学报, 2021, 57(4): 567-574. [11] XU Jinghui, LI Longfei, LIU Xingang, LI Hui, FENG Qiang. Thermal-Stress Coupling Effect on Microstructure Evolution of a Fourth-Generation Nickel-Based Single-Crystal Superalloy at 1100oC[J]. 金属学报, 2021, 57(2): 205-214. [12] GUO Qianying, LI Yanmo, CHEN Bin, DING Ran, YU Liming, LIU Yongchang. Effect of High-Temperature Ageing on Microstructure and Creep Properties of S31042 Heat-Resistant Steel[J]. 金属学报, 2021, 57(1): 82-94. [13] WU Yupeng, ZHANG Bo, LI Jingming, ZHANG Shuangnan, WU Ying, WANG Yumin, CAI Guixi. Ultrasonic Detection for Fiber Broken in Aero-Engine Integral Bladed Ring[J]. 金属学报, 2020, 56(8): 1175-1184. [14] LIU Tian, LUO Rui, CHENG Xiaonong, ZHENG Qi, CHEN Leli, WANG Qian. Investigations on the Accelerated Creep Testing of Alumina-Forming Austenitic Stainless Steel[J]. 金属学报, 2020, 56(11): 1452-1462. [15] WU Jing,LIU Yongchang,LI Chong,WU Yuting,XIA Xingchuan,LI Huijun. Recent Progress of Microstructure Evolution and Performance of Multiphase Ni3Al-Based Intermetallic Alloy with High Fe and Cr Contents[J]. 金属学报, 2020, 56(1): 21-35. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed