Uniaxial creep test data for 14 MoV 6 3 material at 550 °C and a stress of 190 MPa

The aim of the project was to compare various techniques for the assessment of remaining life for power plant components. 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.

本项目旨在比较电厂部件剩余寿命评估的各类技术。蠕变试验（creep tests）的设计旨在制备一系列具有0.2%至5%定量化蠕变应变的试样，以支持蠕变损伤评估（creep damage assessment）。此外，还测定了新制及服役后钢材的基础断裂数据（rupture data）。多个蠕变实验室参与了本测试项目。在FZ Jülich实验室，测试材料涵盖新制与服役后的1Cr0.5Mo钢、新制0.5Cr0.5Mo0.25V钢及新制2.25Cr1Mo钢。服役后的1Cr0.5Mo试样取自在525℃、110 bar条件下服役250000小时的管道；服役后的0.5Cr0.5Mo0.25V试样则取自在530℃、176 bar条件下服役116000小时的锻件。该蠕变数据集包含530℃、550℃、600℃及625℃下的测试结果，最长测试时长分别为：服役后1Cr0.5Mo钢26000小时、新制1Cr0.5Mo钢14000小时、新制0.5Cr0.5Mo0.25V钢24000小时。