Research on high-temperature mechanical properties and microstructure features of a new type austenite heat-resistant stainless steel 305B
A new kind of heat-resistant stainless steel 305B is studied on its mechanical properties under high temperatures in this paper.We also use the thermo-dynamic software THERMO-CALC to accomplish the calculation of phase diagram and predict the microstructure of the alloy.By comparing the simulated with real microstructure,it is found out that the results are almost the same.The microstructure under high temperatures has been analyzed by optical microscope and TEM,it shows that there is a small amount of ferrites between 500 - I OOOcC and it can be confirmed that a higher strength mainly comes from NbC precipitation.At last the mechanical properties of the alloy between 500 - 1 000℃ are studied.The results show that the tensile strength of 305B is higher than 304 and 310S;the yield strength of 305B is higher than 304 and nearly the same as 310S.Reduction of area of 305B is better than 310S and a little lower than 304.
305B austenite stainless steel heat-resistant stainless steel high-temperature mechanical property thermo-calc microstructure
WANG Mingtao BAI Jingang
Technology Center,Taigang Stainless Steel Co.,Ltd.,Taiyuan 030003,Shanxi,China
国内会议
上海
英文
1-4
2013-06-01（万方平台首次上网日期，不代表论文的发表时间）