Han Zhibiao, Liu Jianhua, He Yang. Solidification Structure and Inclusions of Ti-containing FeCrAl Stainless Steel[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(2): 125-132. doi: 10.7513/j.issn.1004-7638.2016.02.022
Citation:
Han Zhibiao, Liu Jianhua, He Yang. Solidification Structure and Inclusions of Ti-containing FeCrAl Stainless Steel[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(2): 125-132. doi: 10.7513/j.issn.1004-7638.2016.02.022
Han Zhibiao, Liu Jianhua, He Yang. Solidification Structure and Inclusions of Ti-containing FeCrAl Stainless Steel[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(2): 125-132. doi: 10.7513/j.issn.1004-7638.2016.02.022
Citation:
Han Zhibiao, Liu Jianhua, He Yang. Solidification Structure and Inclusions of Ti-containing FeCrAl Stainless Steel[J]. IRON STEEL VANADIUM TITANIUM, 2016, 37(2): 125-132. doi: 10.7513/j.issn.1004-7638.2016.02.022
The precipitation of TiN and AlN in FeCrAl stainless steel were calculated using Thermo-Calc software.The results indicated that the Ti content should be controlled around 0.08%.The ratios of central equiaxed grain in longitudinal and cross section firstly rise then decreased with Ti content.When Ti content was 0.088%,these two ratios reached maximum of 39.5% and 16%,respectively.Results of high temperature tensile indicated that the addition of Ti did not improve the high-temperature mechanical properties.SEM analysis indicated that there were mainly five kinds of Ti-containing inclusions,which were pure TiN,TiN(AlN) compound inclusion,TiN-Al2O3 compound inclusion,pure TiS and TiS(oxidation) compound inclusion.The former three types of inclusions were dominant while the latter two were very low in terms of their quantities.
DownLoad: