STATISTICAL MODEL FOR FRACTURE TOUGHNESS OF A MODIFIED Al-7Si-0.45Mg CAST ALLOY

Abstract

Abstract: The statistical model for the fracture toughness of a modified Al-7Si-0.45Mg cast alloy has been proposed on the basis of analysis of the correlation between the size distribution of crack nuclei and Si particles and of the micromechanism of fracture.The suitable criterion of frac- ture toughness according to the model has been given.The model has found a good explana- tion for the fracture feature,fracture toughness and microstructure,and agreed with the ex- periments very well.

Key words: cast Al alloy, fracture toughness, statistical model

ZHANG Guobin CHEN Changqi Beijing University of Aeronautics and Astronautics,Beijing,China Dept.of Materials Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China. STATISTICAL MODEL FOR FRACTURE TOUGHNESS OF A MODIFIED Al-7Si-0.45Mg CAST ALLOY[J]. Acta Metallurgica Sinica (English Letters), 1990, 3(4): 262-267.

[1]	Ke Xu, Tao Fang, Longfei Zhao, Haichao Cui, Fenggui Lu. Effect of Trace Element on Microstructure and Fracture Toughness of Weld Metal [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(3): 425-436.
[2]	Manoj Kumar Pathak, Amit Joshi, K. K. S. Mer, R. Jayaganthan. Mechanical Properties and Microstructural Evolution of Bulk UFG Al 2014 Alloy Processed Through Cryorolling and Warm Rolling [J]. Acta Metallurgica Sinica (English Letters), 2019, 32(7): 845-856.
[3]	Yun-Long Xue, Shuang-Ming Li, Hong Zhong, Lai-Ping Li, Heng-Zhi Fu. Microstructure Characterization and Fracture Toughness of Laves Phase-Based Cr-Nb-Ti Alloys [J]. Acta Metallurgica Sinica (English Letters), 2015, 28(4): 514-520.
[4]	Vineet Kumar, I. V. Singh, B. K. Mishra,R. Jayaganthan. Improved Fracture Toughness of Cryorolled and Room Temperature Rolled 6082 Al Alloys [J]. Acta Metallurgica Sinica (English Letters), 2014, 27(2): 359-367.
[5]	Yasuhiro YAMAZAKI, Shin-ichiro KUGA,Toshihiko YOSHIDA. Evaluation of interfacial strength by an instrumented indentation method and its application to an actual TBC vane [J]. Acta Metallurgica Sinica (English Letters), 2011, 24(2): 109-117.
[6]	Fang WANG,Weicheng CUI. Effect of three dimensional stress state on unstable fracture condition and crack opening level in a new crack growth model [J]. Acta Metallurgica Sinica (English Letters), 2010, 23(1): 41-49.
[7]	S.Q. Zhou, W. Zhao, W.H. Xiong, Y.N. Zhou. Effect Of Mo And Mo2c On Themicrostructure And Properties Of The Cermets Based On Ti(C,N) [J]. Acta Metallurgica Sinica (English Letters), 2008, 21(3): 211-219 .
[8]	H. Y. Jing; L. X. Huo; Y. F. Zhang and F. Minami( 1) College of Material Science, Tianjin University, Tianjin 300072,China 2) Osaka University, Japan). PROBABILISTIC MODELING OF BRITTLE FRACTURE WITH PRIOR DUCTILE CRACK EXTENSION [J]. Acta Metallurgica Sinica (English Letters), 2000, 13(1): 98-102.
[9]	Z.L. Zhou and S.H. Liu(Dept. of Materials Science and Engineering, Dalian Railway Institute, Dalian 116028, China). INFLUENCE OF LOCAL BRITTLE ZONE ON THE FRACTURE TOUGHNESS OF HIGH-STRENGTH LOW-ALLOYED MULTIPASS WELD METALS [J]. Acta Metallurgica Sinica (English Letters), 1998, 11(2): 87-92.
[10]	L.F Li;YY Li;O. Sbaizeroand S. Meriani(Cryoguic Laboratory Chinese Academy of Sciences, Beijing 100080, China )(Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China)(Materials Engineering Department, University of Triesty, Italy). CERAMICS AS CANDIDATE STRUCTURAL MATERIALS FOR CRYOGENIC APPLICATIONS [J]. Acta Metallurgica Sinica (English Letters), 1997, 10(3): 179-183.
[11]	S.C Liu(Research Institute for Fracture Technology Faculty of Engineering, Tohoku University, Sendai, Japan; on leave from Dalian Railway Institute, Dalian 116028, China)II-Hyun Kown;T Hashida and H Takahashi(Research Institute for nacture Technology, Faculty of Engineering, Tohoku Univeristy, Sendai, Japan). EVALUATION OF EMBRITTLEMENT BEHAVIOR DUE TO SENSITIZATION IN A CRYOGENIC AUSTENITIC STAINLESS STEEL BY MEANS OF SMALL PUNCH AND FRACTURE TOUGHNESS TESTS [J]. Acta Metallurgica Sinica (English Letters), 1997, 10(3): 239-248.
[12]	X.H.Song(Centre for Materials Research and Analysis,Wuhan University of Technology,Wuhan 430070,China Manuscript received 6 November 1995;in revised form 24 May 1996). NONLOCAL THEORY STUDY ON FRACTURE TOUGHNESS OF CERAMIC MATERIALS [J]. Acta Metallurgica Sinica (English Letters), 1996, 9(4): 256-262.
[13]	LIN Junshan YAN Wenbin TU Mingjing Xi'an Jiaotong University,Xi'an,China. CRACK INITIATION POINT DETERMINATION AND DYNAMIC FRACTURE TOUGHNESS FOR CHARPY PRE-CRACKED SPECIMEN [J]. Acta Metallurgica Sinica (English Letters), 1992, 5(5): 379-384.
[14]	LI Huanxi CHEN Changqi Beijing University of Aeronautics and Astronautics,Beijing,China. MECHANISMS AND PREDICTION OF FRACTURE TOUGHNESS ANISOTROPY OF HIGH STRENGTH Al ALLOYS [J]. Acta Metallurgica Sinica (English Letters), 1992, 5(5): 324-329.
[15]	XU Changgan ZENG Zhongping Beijing University of Aeronautics and Astronautics,Beijing,China. DYNAMIC FRACTURE TOUGHNESS OF ULTRASTRENGTH STEELS FOR AIRCRAFT [J]. Acta Metallurgica Sinica (English Letters), 1991, 4(3): 209-213.

STATISTICAL MODEL FOR FRACTURE TOUGHNESS OF A MODIFIED Al-7Si-0.45Mg CAST ALLOY

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments