摘要
平面应变断裂韧度是材料进行损伤容限设计时用到的重要力学性能指标,因此如何通过试验手段获得该指标显得格外重要。本文对超高强结构钢AF1410进行了平面应变断裂韧度和延性断裂韧度的试验研究,结果表明:由于该材料的断裂韧度值较高,使得确保处于平面应变状态的试样尺寸过大,难以在普通低吨位的试验机上完成,而选用合适的试样尺寸,通过延性断裂韧度试验和相关的公式计算,则可以间接地获得超高强结构钢材料的有效平面应变断裂韧度值。
Plane-strain fracture toughness is an important mechanical performance index for damage limitation design, so how to obtain this value through test deserves consideration. In this paper,plane-stain fracture toughness test and ductile fracture tough- ness test were performed for super - highstrength structural steel AF1410. The results manifested that it was difficult for the specimen with big dimensions in the case of plane-strain to be carried out through ordinary testing machine with lower capacity because of the higher fracture toughness value of the material, that it was attained indirectly for plane-straln fracture toughness value of super-high strength steel by the way of ductile fracture toughness test and pertinent formula calculation if proper specimen selected.
出处
《材料开发与应用》
CAS
2008年第5期12-14,29,共4页
Development and Application of Materials
关键词
超高强结构钢AF1410
平面应变断裂韧度试验
延性断裂韧度试验
试样尺寸
Super-highstrength structural steel AF1410
Plane-straln fracture toughness test
Ductile fracture toughness test
Specimen dimensions
