论文部分内容阅读
FeCrNi奥氏体合金中Cr和Ni元素对高温水应力腐蚀断裂(SCC)性能有很大影响。本试验目的是用慢应变速率SCC试验方法研究Cr和Ni含量对SCC的作用规律,确定满足抗SCC性能要求的Cr和Ni含量的临界值,并预测开发新的抗SCC合金的主要元素配比模式。两种试验材料体系的化学组成列入表1,应变速率均为4.2×10~(-6)/s,试验温度300℃,试验介质分为高纯氮气和未除气并含100ppmCl~-的水两种。
The Cr and Ni elements in FeCrNi austenitic alloys have a great influence on SCC performance. The purpose of this experiment is to study the effect of Cr and Ni content on SCC with slow strain rate SCC test method to determine the critical value of Cr and Ni content to meet the requirements of anti-SCC performance and predict the ratio of main elements in developing new anti-SCC alloy mode. The chemical compositions of the two test materials are listed in Table 1. The strain rates are both 4.2 × 10 -6 / s and the test temperature is 300 ° C. The test medium is divided into high purity nitrogen and 100 ppm Cl - Two kinds of water.