TC4合金断裂韧性与冲击韧性的关系研究  

Investigation on relationship between fracture toughness and impact toughness of TC4 alloy

作　　者：李瑶 高慧贤[1] 李芹芹 王子超 罗文忠[1] LI Yao;GAO Huixian;LI Qinqin;WANG Zichao;LUO Wenzhong(Western Superconducting Technology Co.Ltd.,Xi′an 710018,China)

机构地区：[1]西部超导材料科技股份有限公司,陕西西安710018

出　　处：《兵器材料科学与工程》2023年第3期109-115,共7页Ordnance Material Science and Engineering

摘　　要：用TC4合金进行断裂韧性和不同缺口类型的冲击韧性试验。结果表明:断裂韧性K_(IC)^(2)与冲击韧性a_(k)正相关,U型缺口的冲击韧性分散性小,预测断裂韧性的可靠性更高。测定杂质元素含量发现,H含量与断裂韧性K_(IC)负相关,C、N_(2)、O与断裂韧性无明显关系。The fracture toughness and impact toughness of different notch types of TC4 alloy were tested.The results show that the fracture toughness K_(IC)~2 is positively correlated with the impact toughness a_k,and the impact toughness of U‐notch is less dispersed,and the reliability of predicting fracture toughness is higher.The determination of impurity element content indicates that hydrogen content is negatively correlated with fracture toughness K_(IC),while carbon,nitrogen and oxygen elements have no obvious relationship with fracture toughness.

关 键 词：TC4合金 断裂韧性 冲击韧性 氢脆 

分 类 号：TG146.23[一般工业技术—材料科学与工程]