Uniaxial tensile test data for 13 CrMo 4 4 material at 20 °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单轴蠕变、单轴拉伸及弹性模量测试数据。欧洲科学与技术合作组织（COST）第五工作组第二轮项目（COST 501 Round II 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子工作组则聚焦于蒸汽管道用钢。在WP5 C子工作组的研究范围内，研究人员对13CrMo 4 4（1Cr0.5Mo0.25V）和14MoV 6 3（0.5Cr0.5Mo0.25V）两种钢的新态（正火回火态）及服役老化态开展了蠕变断裂测试。两种钢的服役老化条件分别为：13CrMo 4 4钢在525℃下服役250000小时，14MoV 6 3钢在530℃下服役116000小时。本次测试的目标在于为上述钢种提供基础蠕变断裂数据，并制备一系列带有确定蠕变应变量的试样，用于蠕变损伤的无损分析。在短时测试中，新态材料的强度显著高于服役老化态材料；随着测试时长增加，二者的断裂强度逐渐趋同，最终形成稳定的微观组织。对于13CrMo 4 4钢，其蠕变损伤的演化规律取决于初始状态：新态材料在蠕变应变约1%的较低水平下便会出现蠕变孔洞，而服役老化态材料在经过10000小时测试后未观察到空穴现象。而对于14MoV 6 3钢，无论新态还是服役老化态试样，在短时测试中均发现了蠕变损伤。