Multiaxial creep of fine grained 0·5Cr–0·5Mo–0·25V and coarse grained 1Cr–0·5Mo steels
Multiaxial creep of fine grained 0·5Cr–0·5Mo–0·25V and coarse grained 1Cr–0·5Mo steels
复制标题
细晶粒 0·5Cr–0·5Mo–0·25V 和粗晶粒 1Cr–0·5Mo 钢的多轴蠕变
DOI：
10.1179/mst.1991.7.8.707
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发表时间：
1991
影响因子：
1.8
通讯作者：
J. Sao
中科院分区：
文献类型：
--
作者：
R. Browne;P. Flewitt;Deryle W. Lonsdale;M. Shammas;J. Sao
为了研究电站用材料的多轴蠕变响应，选择了两种钢，即具有高蠕变塑性的正火回火细晶0.5Cr-0.5Mo-0.25V钢和具有低单轴蠕变塑性的淬火回火粗晶1Cr-0.5Mo钢。已经使用了一系列多轴应力测试技术，这些技术跨越了允许识别任何技术相关变量的应力状态。在一系列多轴试验条件下，正火和回火的0·5Cr-0·5 Mo-0·25 V钢的变形和破坏以及应力状态可用等效应力准则来描述。对全贝氏体1Cr-0·5 Mo钢进行的多轴试验结果表明，多轴应力断裂准则随应力状态而变化，在高三轴度（缺口）时，受最大主应力控制，而在低三轴度（剪切）时，受最大主应力控制。
AbstractTo explore the multiaxial creep response of materials used from electrical power generating plant, two steels, a fine grained 0·5Cr–0·5Mo–0·25V steel in a normalised and tempered condition with high creep ductility and a coarse grained 1Cr–0·5Mo steel in a quenched and tempered condition with low uniaxial creep ductility, have been selected. A range of multi axial stress testing techniques which span the stress states that would allow identification of any technique dependent variables has been used. The deformation andfailure of the normalised and tempered 0·5Cr–0·5Mo–0·25V steel for a range of multi axial test techniques and, therefore, stress states may be described by an equivalent stress criterion. The results from the multiaxial tests carried out on the fully bainitic 1Cr–0·5 Mo steel show that the multiaxial stress rupture criterion (MSRC) varies with stress state, at high triaxialit y (notch) , it is controlled by the maximum prinicipal stress, whereas, at low triaxiality (shear), it is de...