Uniaxial tensile test data for 14 MoV 6 3 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.

这个数据集包含在尤利希研究中心（FZ Jülich）开展的、属于COST 501/II/WP5 C项目范畴的低合金钢单轴蠕变、单轴拉伸及弹性模量测试结果。COST 501第二轮第5工作包（WP5）旨在模拟服役载荷下的剩余寿命预测，而WP5 C子包则聚焦于蒸汽管道用钢。在WP5 C子包的研究范围内，针对13CrMo 4 4（1Cr0.5Mo0.25V）和14MoV 6 3（0.5Cr0.5Mo0.25V）两种钢材，分别在新材状态（正火+回火）及服役暴露状态下开展了蠕变断裂试验。其中，13CrMo 4 4的服役条件为525℃下25万小时，14MoV 6 3的服役条件为530℃下11.6万小时。该研究的目标是为上述钢材提供基础蠕变断裂数据，并制备一系列具有特定蠕变应变的试样，用于蠕变损伤的无损分析。在短期试验中，新材的强度显著高于服役暴露材料；随着试验时间延长，两种状态材料的断裂强度逐渐趋近，这是由于稳定微观结构的形成所致。对于13CrMoV 4 4钢，蠕变损伤的发展取决于初始状态：新材在约1%的较低蠕变应变后即出现蠕变孔洞；而服役暴露状态材料在1万小时试验后未观察到空化现象。对于14MoV 6 3钢，新材和服役暴露材料在短期试验中均出现了蠕变损伤。