Acta Metall Sin  1998, Vol. 34 Issue (1): 70-74    DOI:

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FATIGUE CRACK GROWTH RATES AND FATIGUE THRESHOLDS OF CENTRIFUGAL SPRAY DEPOSITED Ti-48Al-2Mn-2Nb

CHEN Wenzhe;ZHANG Sa;QIAN Kuangwu (Department of Materials; Fuzhou University; Fuzhou 350002)GU Haicheng (Institute of Materials; Xi'an Jiaotong University; Xi'an 710049)WANG Zhongguang (State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015)

CHEN Wenzhe;ZHANG Sa;QIAN Kuangwu (Department of Materials; Fuzhou University; Fuzhou 350002)GU Haicheng (Institute of Materials; Xi'an Jiaotong University; Xi'an 710049)WANG Zhongguang (State Key Laboratory for Fatigue and Fracture of Materials; Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110015). FATIGUE CRACK GROWTH RATES AND FATIGUE THRESHOLDS OF CENTRIFUGAL SPRAY DEPOSITED Ti-48Al-2Mn-2Nb. Acta Metall Sin, 1998, 34(1): 70-74.

Abstract References Related Articles Recommended Metrics Download:  PDF(1316KB)  Export:  BibTeX | EndNote (RIS)       Abstract  The fatigue crack growth rates and fatigue thresholds of a Ti-48Al-2Mn-2Nb intermetallics, which was formed by a special spray forming technique so--called" centrifugal spray deposition" (CSD) under a low vaccum condition, were investigated at ambient temperature.Threepoint bend fatigue specimens with notch length of 0.5 mm were prepared and compressioncompression fatigue tests were carried out under load control. The results show that CSD samples with lamellar-structure have a better fatigue crack growth resistance and a higher fatigue threshold than that of HIP (hot isostatic pressing) samples with duplex structure. The relationship of da/dNversus △K could be shown as: da/dN=3.8×10-12 (△K)6 for CSD samples and da/dN=1.9 ×10-17 (△H)12 for HIP samples, and the fatigue thresholds of CSD and HIP samples are 10.5 MPa m1/2 and 7.5 MPam1/2, respectively. Key words:  Ti-48Al-2Mn-2Nb      centrifugal spray deposition      fatigue crack growth rate      fatiguethreshold      Received:  18 January 1998      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/Y1998/V34/I1/70 1 Kim Y W.JOM 1989; 41(7):24 2 Kim Y W.JOM,1994;46(7):30 3 曲选辉,黄伯云,吕海波,黄培云.稀有金属材料与工程,1991;20(4):3(Qu Xuanhui, Huang Boyun,Lu Haibo,Huang Peiyun.Rare Met Mate,Eng,1991;20(4): 3) 4 陈文哲.西安交通大学博士学位论文,1997(Chen wenzhe.Ph D Thesis of Xi’an Jiaotong University, 1997) 5 陈文哲.稀有金属,1996;20(增刊):13(Chen Wenzhe.Rare Met;1996;20(Suppl):13) 6 Bowen P,Chave R A,James A W.Mater Sci Eng,1995; A192/193: 443 7 Chan K S. JOM, 1992; 44(5): 30 [1] 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. [2] Qiliang NAI,Jianxin DONG,Maicang ZHANG,Zhihao YAO. INFLUENCE OF MULTI-MICROSTRUCTURE INTERACTION ON FATIGUE CRACK GROWTH RATE OF GH4738 ALLOY[J]. 金属学报, 2016, 52(2): 151-160. [3] XIONG Ying CHEN Bingbing ZHENG Sanlong GAO Zengliang. STUDY ON FATIGUE CRACK GROWTH BEHAVIOR OF 16MnR STEEL UNDER DIFFERENT CONDITIONS[J]. 金属学报, 2009, 45(7): 849-855. [4] LU Liantao LI Wei ZHANG Jiwang SHIOZAWA Kazuaki ZHANG Weihua. ANALYSIS OF ROTARY BENDING GIGACYCLE FATIGUE PROPERTIES OF BEARING STEEL GCr15[J]. 金属学报, 2009, 45(1): 73-78. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed