Uniaxial tensile test data for 13 CrMo 4 4 material at 530 °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.

本数据集包含在德国于利希研究中心（FZ Jülich）开展的、隶属于COST 501/II/WP5 C项目的低合金钢试验数据，涵盖单轴蠕变（uniaxial creep）、单轴拉伸（uniaxial tensile）及弹性模量（elastic modulus）测试结果。COST 501计划第二轮第五工作包（Work Package 5）的研究主题为模拟服役载荷下的剩余寿命预测，其下的WP5 C子包则聚焦于蒸汽管道用钢（steam pipe steels）。在WP5 C子包的研究范围内，研究人员对13CrMo44（1Cr0.5Mo0.25V）及14MoV63（0.5Cr0.5Mo0.25V）两种钢的全新态（正火回火态，normalised and tempered）与服役暴露工况下的试样开展了蠕变断裂试验（creep rupture testing）。其中，13CrMo44钢的服役暴露条件为525℃下服役250000小时，14MoV44钢则为530℃下服役116000小时。本数据集的研究目标为：为上述钢种提供基础蠕变断裂数据，并制备一系列带有定量蠕变应变（creep strain）的试样，用于蠕变损伤（creep damage）的无损检测分析（non-destructive analysis）。短时试验结果显示，全新态材料的强度显著高于服役暴露态材料；随着试验时长增加，两种状态材料的断裂强度（rupture strengths）逐渐趋于一致，这是因为二者均形成了稳定的微观组织（microstructures）。对于13CrMoV44钢，其蠕变损伤的演化过程取决于初始状态：全新态材料在蠕变应变约1%的较低水平下即出现蠕变孔洞形成（creep pore formation）现象，而服役暴露态材料在10000小时试验后未观察到蠕变空穴（cavitation）。对于14MoV63钢，全新态与服役暴露态试样的短时试验中均发现了蠕变损伤。