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Fatigue strength dependence on the ultimate tensile strength and hardness in magnesium alloys
Affiliation:1. National Engineering Research Center of Light Alloys Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, 200030 Shanghai, PR China;2. General Motors Company, Warren, MI 48090, USA;3. The Ohio State University, Columbus, OH 43210, USA;1. Materials Science Program, University of Wisconsin – Madison, 1509 University Ave., Madison, WI 53706, USA;2. Department of Materials Science and Engineering, University of Wisconsin – Madison, 1509 University Ave, Madison, WI 53706, USA;3. Department of Materials Science and Engineering, The Ohio State University, 116 W. 19th Ave, Columbus, OH 43210, USA;1. National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China;2. General Motors China Science Lab, Shanghai 201206, China;3. College of Engineering, the Ohio State University, Columbus, OH 43210, USA;1. Materials Science Program, University of Wisconsin – Madison, 1509 University Ave., Madison, WI 53706, USA;2. Department of Materials Science and Engineering, University of Wisconsin – Madison, 1509 University Ave., Madison, WI 53706, USA;3. Computherm LLC, 437 S. Yellowstone Dr., Suite217, Madison, WI 53719, USA;4. Department of Materials Science and Engineering, The Ohio State University, 116 W. 19th Ave., Columbus, OH 43210, USA;5. Department of Materials Science and Engineering, Shanghai Jiaotong University, 800, Dongchuan Road, Shanghai, China;1. Fontana Corrosion Center, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA;2. Light Metals and Manufacturing Research Lab, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA;1. Materials Science Program, University of Wisconsin-Madison, 1509 University Ave., Madison, WI 53706, United States;2. Department of Materials Science and Engineering, Department of Integrated Systems Engineering, Ohio State University, Columbus, OH 43210, United States;3. Department of Materials Science and Engineering, University of Wisconsin-Madison, 1509 University Ave., Madison, WI 53706, United States
Abstract:The relationships between fatigue strength and ultimate tensile strength as well as hardness have been studied in high-strength NZK alloys (Mg–yNd–zZn–xZr) and other magnesium alloys. In the absence of casting defects, clear linear relationships have been found between the fatigue strength and the ultimate tensile strength and the hardness values in these magnesium alloys in both T4 (solutionized) and T6 (solutionized and aged) conditions. The fatigue strength models developed in this work alloys can be directly applied to other defect-free magnesium alloys.
Keywords:Fatigue strength prediction  High cycle fatigue  Hardness and tensile strength  Magnesium alloys
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