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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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al--7si--0.3mg铸造合金的旋转弯曲疲劳性能研究
Keywords: 金属材料,al--7si--0.3mg合金,旋转弯曲疲劳,s--n曲线,孔洞
Abstract:
？研究了al--7si--0.3mg铸造铝合金的室温旋转弯曲疲劳性能。结果表明,al--7si--0.3mg铸造铝合金在10$^{7}$次疲劳寿命下的极限应力为88mpa；结合对疲劳试样断口的分析发现,在高应力低寿命区,al--7si--0.3mg合金试样的表面划痕和缺陷造成了材料的表面破坏模式；而在低应力高寿命区,试样内部近表面区的铸造孔洞则是引起材料疲劳破坏的主要原因。使用paris公式推导出孔洞尺寸和疲劳寿命之间的关系,并计算出不同应力水平条件下的临界孔洞尺寸。
| [1] | 1tianrongzhang,castaluminiumalloy(changsha,centralsouthuniversitypress,2006)p.9
|
| [2] | (田荣璋,铸造铝合金(长沙,中南大学出版社,2006)p.9)
|
| [3] | 2zhuzhengyu,heguoqiu,dingxiangqun,liuxiaoshan,zhangweihua,lowcyclefatiguebehaviorofcastaluminumalloyzl101undermulti–axialloading,thechinesejournalofnonferrousmetals,17(6),916(2007)
|
| [4] | (朱正宇,何国求,丁向群,刘晓山,张卫华,多轴载荷下zl101铝合金的低周疲劳行为,中国有色金属学报,17(6),916(2007))
|
| [5] | 3zhoujingen,ranguang,studyonfatiguecrackinitiationandpropagationofcastaluminumalloya356,heattreatmentofmetals,33(1),34(2008)
|
| [6] | (周敬恩,冉广,a356铸造铝合金的疲劳裂纹萌生及短裂纹扩展研究,金属热处理,33(1),34(2008))
|
| [7] | 4t.sakai,y.sato,n.oguma,characteristics—npropertiesofhigh–carbon–chromium–bearingsteelunderaxialloadinginlong–lifefatigue,fatiguefract.eng.mater.struct.,25,765(2002)
|
| [8] | 5q.g.wang,d.apelian,d.a.lados,fatiguelifeassessmentofaluminumalloyswithcastingdefects,eng.fract.mech.,44,857(1993)
|
| [9] | 6luliantao,liwei,zhangjiwang,shiozawakazuaki,zhangweihua,analysisofrotarybendinggigacyclefatiguepropertiesofbearingsteelgcr15,actametallurgicasinica,45(1),73(2009)
|
| [10] | (鲁连涛,李伟,张继旺,盐泽和章,张卫华,gcr15钢旋转弯曲超长寿命疲劳性能分析,金属学报,45(1),73(2009))
|
| [11] | 7m.j.couper,a.e.nesson,j.r.griffith,castingdefectsandthefatiguelifeofanaluminumcastingalloy,fatiguefract.eng.mater.struct.,13,213(1990)
|
| [12] | 9modefeng,heguoqiu,huzhengfei,zhangweihua,effectofporosityonfatiguepropertyinaluminumcastalloys,journalofmaterialsengineering,(7),92(2010)
|
| [13] | (莫德锋,何国求,胡正飞,张卫华,孔洞对铸造铝合金疲劳性能的影响,材料工程,(7),92(2010))
|
| [14] | 10k.shiozawa,l.lu,s.ishihara,s–ncurvecharacteristicsandsubsurfacecrackinitiationbehaviourinultra–longlifefatigueofahighcarbon–chromiumbearingsteel,fatiguefract.eng.mater.struct.,24,781(2001)
|
| [15] | 11y.murakami,m.endo,effectsofdefects,nonmetallicinclusionsandinhomogeneitiesonfatiguestrength,int.j.fatigue,16,163(1994)
|
| [16] | 12kwais.chan,peggyjones,qiguiwang,fatiguecrackgrowthandfracturepathsinsandcastb319anda356aluminumalloys,materialsscienceandengineering,a341,18(2003)
|
| [17] | 8c.m.sonsino,j.ziese,fatiguestrengthandapplicationsofcastaluminumalloyswithdifferentdegreesofporosity,internationaljournaloffatigue,15,75(1993)
|
| [18] | 13g.savaidis,a.savaidis,g.t.samasphyros,onsizeandtechnologicaleffectsinfatigueanalysisandperdictionofengineeringmaterialsandcomponents,internationaljournalofmechanicalsciences,44(3),521(2002)
|
| [19] | 14b.zhang,effectofsolidificationcoolingrateonthefatiguelifeofa356.2–t6castaluminumalloys,fatiguefract.eng.mater.struct.,23,417(2000)
|
| [20] | 15luliantao,shiozawakazuaki,moriiyuichi,nishinoseiichi,actametallurgicasinica,41,1066(2005)
|
| [21] | (鲁连涛,盐泽和章,森井佑一,西野精一,高碳铬轴承钢超长寿命疲劳破坏过程的研究,41,1066(2005))
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