Uniaxial tensile test data for 13 CrMo 4 4 material at 560 °C

This data collection consists of uniaxial creep, uniaxial tensile, and elastic modulus results from tests performed on low-alloy steels at FZ Jülich in the scope of COST 501/II/WP5 C. With COST 501 Round II Work Package 5 concerned with the prediction of residual lifetime under simulated service loads, the WP5 C sub-package was focused on steam pipe steels.In the scope of the WP5 C sub-package, creep rupture testing of 13CrMo 4 4 (1Cr0.5Mo0.25V) and 14MoV 6 3 (0.5Cr0.5Mo0.25V) steels in new (normalised and tempered) and service exposed conditions was carried out. The service conditions were 250 000 h at 525°C for 13CrMo 4 4 and 116 000 h at 530°C for 14MoV 4 4. The aims were to provide basic creep rupture data for the steels and to provide a series of test pieces with defined amounts of creep strain for non-destructive analysis of creep damage.For the short duration tests, the new materials were significantly stronger than the service exposed materials. With increasing test time the rupture strengths of the new and the service exposed material converged as stable microstructures were established.For the 13CrMoV 4 4 steel, the creep damage developed depended on the initial condition; new material exhibited creep pore formation after relatively low creep strains around 1 % whereas in the service exposed condition no cavitation after 10 000 h was observed. For the 14MoV 6 3 steel, creep damage was found in short duration tests of both new and service exposed material.

本数据集收录了于利希研究中心（FZ Jülich）在COST 501/II/WP5 C框架下开展的低合金钢试验所得的单轴蠕变、单轴拉伸及弹性模量测试结果。COST 501第二轮工作包5的研究主题为模拟服役载荷下构件剩余寿命预测，其子包WP5 C则聚焦于蒸汽管道用钢。在WP5 C子包的研究框架内，研究人员针对13CrMo 4 4（1Cr0.5Mo0.25V）与14MoV 6 3（0.5Cr0.5Mo0.25V）两种钢，分别开展了新态（正火回火态）与服役暴露工况下的蠕变断裂试验。13CrMo 4 4钢的服役暴露工况为525℃下服役250000小时，14MoV 4 4钢的服役暴露工况为530℃下服役116000小时。本次试验的目标为：为两类钢提供基础蠕变断裂数据，并制备一系列带有明确蠕变应变量的试样，用于蠕变损伤的无损分析。短时试验结果显示，新态材料的强度显著高于服役暴露材料；随着试验时长增加，新态与服役暴露材料的断裂强度逐渐趋于一致，此时二者均形成了稳定的微观组织。对于13CrMoV 4 4钢，其蠕变损伤演化规律取决于初始状态：新态材料在蠕变应变约1%的较低水平下便出现蠕变孔洞，而服役暴露态材料在服役10000小时后未观察到空穴现象。对于14MoV 6 3钢，无论新态还是服役暴露态试样，在短时试验中均检测到了蠕变损伤。