|
|
Behavior of Rotating-Bending Fatigue Failure of AF1410 Steel |
HAN Shun1,LI Yong1,WANG Chun-xu1,LIU Xian-min1,LI Jian-xin2 |
(1. Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China 2. Fushun Special Steel Co., Ltd., Fushun 113001, Liaoning, China) |
|
|
Abstract High-cycle rotating-bending fatigue properties of high clean ultra-high strength steel AF1410 melted by VIM+VAR were investigated, and then the effect of nonmetal inclusion on fatigue properties in steel systematically was analyzed by mechanical test, analysis of microstructure and SEM of fractures. The results show that, after temper 5 hours at 510℃, AF1410 steel has excellent combined mechanical properties. Rotating-bending fatigue limit of the AF1410 steel reaches to 826MPa. By SEM of fractures, all the crack origins of fatigue stem from process flaws such as cutting marks, fine break. The main reason to lead to crack growth is stress concentration caused by surface flaw. One small and round non-metallic inclusion including La appears in the fractures of high clean steel AF1410 because of the addition of La. However, these inclusions can’t be the crack origins of fatigue.
|
Received: 22 March 2012
Published: 21 March 2013
|
|
|
|
[1] |
DAI Xin-yu, FANG Xu-dong, XU Fang-hong, WEI Ying-hui, HOU Li-feng, DU Hua-yun. Research progress on low cycle fatigue properties of austenitic heat resistant steel[J]. Iron and Steel, 2020, 55(3): 58-67. |
[2] |
LI Tan,WANG Zhang,LI Zhao-chang,WANG Lei. A test method for plastic deformation of ultra-high strength steel under high-speed impact[J]. PHYSICS EXAMINATION AND TESTING, 2019, 37(6): 37-41. |
[3] |
DU Juan,ZHANG Yun-zeng,LI Ya-fan,QIN Bin,ZHENG Ji-wei,QU Zhao-guo. Discussionaboutunderwaterfatigueperformanceofsupport ringmaterialformotorthrustbearing[J]. PHYSICS EXAMINATION AND TESTING, 2019, 37(5): 1-4. |
[4] |
CHE Xiao-jian,,YANG Mao-sheng,TANG Hai-yan,LI Jian-xin, PANG Xue-dong,SUN Yong. Inclusion control and fatigue performance in high performance GCr15 bearing steel[J]. Iron and Steel, 2018, 53(5): 76-85. |
[5] |
XU Gang-jun,LIU Peng,SUI Ya-fei. Research and application of light LF refining technology on hot rolled coil[J]. , 2018, 43(5): 19-25. |
[6] |
DING Can- can,,CAO Yan- guang,YANG Jun- wei,LI Zhao- dong,ZENG Bin,SUI Feng- li. Effect of austenitizing temperature on microstructure and fatigue properties of 51CrV4 steel[J]. , 2018, 30(12): 991-997. |
|
|
|
|