摘要
研究了TA15 ELI合金43 mm厚板双态组织和片层组织的室温拉伸性能、断裂韧性KIC以及疲劳裂纹扩展速率da/dN等损伤容限性能,讨论了显微组织对该合金损伤容限性能的影响。结果表明,相对双态组织而言,该合金片层组织在较少损失拉伸强度的前提下,提高了合金的断裂韧性,降低了合金的疲劳裂纹扩展速率,具有更好的损伤容限性能。
The microstructures and properties of TA 15 ELI alloy 43 mm plates with bi-model and lamellae microstructure were investigated. Two different heat treatments were performed. The results of tests, including tensile, fracture toughness and fatigue crackpropagation, showed that the plate with lamellae microstructure had higher fracture toughness and fatigue crack propagation resistance, with the similar tensile strength to bi-modal microstructure.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2007年第5期709-711,共3页
Chinese Journal of Rare Metals
