Low-cyclic fatigue properties of electrolytic low-titanium A356 alloys

• Published in: Transactions of Nonferrous Metals Society of China Vol. 16; no. A03; pp. 1351 - 1355
• Main Author: 刘忠侠 宋谋胜 翁永刚 王明星 宋天福 刘志勇
• Format: Journal Article
• Language: English
• Published: Key Laboratory of Material Physics of Ministry of Education, School of Physics Engineering, Zhengzhou University, Zhengzhou 450052, China 01.12.2006
• Subjects: 循环硬化; 微观结构; 金属疲劳; 钛合金; cyclic plastic strain energy density; electrolytic low-titanium A356 alloys; low-cyclic fatigue properties
• ISSN: 1003-6326

The low-cycle fatigue （LCF） behavior of two kinds of A356 alloys produced by different titanium alloying methods was investigated and compared. The effect of titanium content and titanium alloying methods on LCF behavior is analyzed with plastic strain energy density. The results show that all alloys exhibit the cyclic hardening behavior. Raising Ti content can obviously increase the cyclic hardening ability. But the effect of Ti alloying method isn＇t distinct. Whether for the EA356 alloys or for MA356 alloys, the alloys with low titanium content have longer low-cycle fatigue life than that of the alloys With high titanium content. This is because that the alloys with low titanium content can consume higher cyclic plastic strain energy during cyclic deformation compared with alloys with high titanium content.