Uniaxial creep test data for 13 CrMo 4 4 se material at 530 °C and a stress of 90 MPa

The aim of the project was to compare various techniques for the assessment of remaining life for power plant components. In this context, creep tests were performed on three grades of low Cr steel, namely 1Cr0.5Mo (DIN 13CrMo 4 4), 0.5Cr0.5Mo0.25V (DIN 14MoV 6 3), and 2.25Cr1Mo (DIN 10CrMo 9 10). The creep tests were designed to provide a series of test pieces with defined creep strains ranging from 0.2 to 5 % for creep damage assessment. In addition, basic rupture data were determined for the steels in the new and service exposed conditions. Several creep laboratories participated in the test programme. At FZ Jülich the materials tested were new and service exposed 1Cr0.5Mo, new 0.5Cr0.5Mo0.25V and new 2.25Cr1Mo steels. The 1Cr0.5Mo service exposed specimens were taken from a pipe that had been in service at 525 oC for 250 000 h at 110 bar, and the 0.5Cr0.5Mo0.25V from a forging after 116 000 h service exposure at 530 °C, 176 bar. The creep data set contains test results determined at 530, 550, 600 and 625 °C and the longest test times were 26000 h for 1Cr0.5Mo service exposed, 14000 h for 1Cr0.5Mo new and 24000 h for new 0.5Cr0.5Mo0.25V.

本项目旨在比较用于评估电厂部件剩余寿命（remaining life）的各类技术。在此背景下，对三种低铬钢牌号开展了蠕变试验（creep tests），即1Cr0.5Mo（DIN 13CrMo 4 4）、0.5Cr0.5Mo0.25V（DIN 14MoV 6 3）及2.25Cr1Mo（DIN 10CrMo 9 10）。蠕变试验的设计目标是提供一系列具有0.2%至5%确定蠕变应变（creep strains）的试样（test pieces），以用于蠕变损伤评估（creep damage assessment）。此外，还测定了新钢及服役后钢的基本断裂数据（rupture data）。多个蠕变实验室参与了该测试项目。在FZ Jülich，测试材料包括新的及服役后的1Cr0.5Mo钢、新的0.5Cr0.5Mo0.25V钢以及新的2.25Cr1Mo钢。服役后的1Cr0.5Mo试样（specimens）取自于在525°C、110 bar条件下运行250000小时的管道；0.5Cr0.5Mo0.25V试样（specimens）则来自在530°C、176 bar条件下服役116000小时的锻件。蠕变数据集包含在530°C、550°C、600°C及625°C下测定的结果，最长测试时间分别为：服役后的1Cr0.5Mo钢26000小时、新的1Cr0.5Mo钢14000小时、新的0.5Cr0.5Mo0.25V钢24000小时。