2005, Volume 7, Issue 10
Strategic Study of CAE >> 2005, Volume 7, Issue 10
Study on an Anti-fatigue Conception of the Ultra-high Strength Steel Part
1. Beijing Institute of Aeronautical Materials , Beijing 100095, China
2. Shenyang Aircraft Design & Research Institute , Shenyang 110035, China
Next Previous
Abstract
A conception of “un-stressing concentration” anti-fatigue for ultra-high strength steel 300 M has been investigated. The compress stress field and cell structure with high density dislocation were formed in surface layer of specimens with the surface integrity machine, shot peening, hole extrusion and screw rolling strengthening, by which the crack initiation was changed to the subsurface from surface, crack propagation was thwarted, fatigue limit at the place of stress concentration were returned to a approximate to the innate fatigue limit of 300 M steel and “un-stressing concentration” surface integrity condition was resulted. This conception of “un-stressing concentration” anti-fatigue was described as a comprehensive equi-fatigue strength, which was equal approximately to the innate fatigue limit of 300M steel, encirclement on the constructure surface case.
Figures
图1
图2
图3
图4
图5
图6
References
[ 1 ] DaviesDP.Duplexhardening:anadvancedsurface treatment[J].HeatTreating, 1992, August:38～46
[ 2 ] KosterWP, FieldM, FritzLJ, etal.Surface integrityofmachinedstructuralcomponents[R].AFML-TR-70-11
[ 3 ] SadatAB.Effectofhighcuttingspeedonsurface integrityofAISI4340steelduringturning[J].MaterialsScienceandTechnology, 1990, 6 (April) :371～375
[ 4 ] NeaileyK.Surfaceintegrityofmachinedcomponents_microstructureaspects[J].MetalsandMaterials, 1988, (Feb) :93～96
[ 5 ] NeailyK.Surfaceintegrityofmachinedcomponents_residualstressesandfatigue[J].MetalsandMaterials, 1988, (March) :141～145
[ 6 ] 王 珉, LauWS.金属表面改性的预应力磨削机理研究[J].机械工程学报, 1992, 28 (3) :104～109
[ 7 ] JainKC, KumarAN, MittalRN, etal.Surface integrityofahardenedandgroundlow_alloysteel_study basedonsurfaceandsubsurfacedamage[J].Materials ScienceandTechnology, 1986, 2 (Aug.) :856～864
[ 8 ] AlexandreMA, DavidKA.TheSurfaceintegrityof turnedandgroundhardenedbearingsteel[J].Wear, 1996, 196:279～284
[ 9 ] 邱 琼.关于超高强度钢喷丸应变层特性与疲劳性能关系的研究[D].北京航空材料研究院硕士论文, 1984
[10] 李金魁.金属喷丸强化理论[D].哈尔滨工业大学博士学位论文, 1989
[11] 王升平.表面强化金属疲劳极限的研究[D].哈尔滨工业大学博士学位论文, 1994
[12] 李向斌, 王仁智, 殷源发.一种新型超高强度钢喷丸强化的研究[J].材料工程, 1991, (3) :14～18 link1
[13] 宋德玉, 高 文, 赵振业.螺纹滚压强化对300M钢螺纹疲劳强度的影响[J].材料工程, 1993, 2:17～19 link1
京公网安备 11010502051620号
