|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
316ln奥氏体不锈钢的高温拉伸断裂行为*
Keywords: 金属材料,奥氏体不锈钢,热塑性,热拉伸,动态再结晶,断裂行为
Abstract:
？用gleeble1500d热力模拟试验机研究了锻造态的aisi316ln奥氏体不锈钢650-1300℃的热塑性及高温拉伸断裂行为,应变速率为0.5s-1。结果表明,在650-1250℃温度范围内,材料的断面收缩率先随着变形温度的升高而降低,在850℃达到最低后开始大幅升高,高于1000℃时都保持在85%以上。但是当温度升高到1300℃时,由于晶粒尺寸急剧变大其晶界强度下降,断面收缩率又急剧降低。用光学显微镜(om)和扫描电镜(sem)观察了试样的热变形区的组织变化和断口形貌,发现材料在1000℃以上热变形时发生了动态再结晶。动态再结晶提高了材料塑性,阻碍了裂纹的扩展。在断口附近裂纹产生的过程包括微裂纹的形核、长大和聚集且和晶界处富集的夹杂物有关。能谱分析表明,这些夹杂物主要是球状的硫化物和不规则的氧化铝类夹杂物。
| [1] | 1wenhuizhang,shuhuasun,delizhao,baozhongwang,zhenhuawang,wantangfu,hotdeformationbehaviorofanb-containing316lnstainlesssteel,materialsanddesign,32(8),4173(2011)
|
| [2] | 2a.a.tavassoli,assessmentofausteniticstainlesssteels,fusionengineeringanddesign,29,371(1995)
|
| [3] | 3h.shaikh,t.anita,r.k.dayal,h.s.khatak,effectofmetallurgicalvariablesonthestresscorrosioncrackgrowthbehaviourofaisitype316lnstainlesssteel,corrosionscience,52(4),1146(2010)
|
| [4] | 11yinghan,guiwuliu,deningzou,rongliu,guanjunqiao,deformationbehaviorandmicrostructuralevolutionofas-cast904lausteniticstainlesssteelduringhotcompression,materialsscienceandengineeringa,565,342(2013)
|
| [5] | 12t.revaux,j.p.bricout,j.oudin,anewtensiletestingprocedureforpredictingtransversecrackingsusceptibilityofcontinuouscastingslabs,journalofmaterialsengineeringandperformance,5(2),260(1996)
|
| [6] | 13lvyan,forgingformingtheoryandtechnology(beijing,mechanicalindustrypress,1991)p.46
|
| [7] | (吕炎,锻压成形理论与工艺(北京,机械工业出版社,1991)p.46)
|
| [8] | 4zhangxiuzhi,zhangyishuai,liyingjieliujiansheng,crackinginitiationmechanismof316lnstainlesssteelintheprocessofthehotdeformation,materialsscienceandengineeringa,559,301(2013)
|
| [9] | 5j.w.simmons,overview:high-nitrogenalloyingofstainlesssteels,materialsscienceandengineeringa,207(2),159(1996)
|
| [10] | 6frankklannica,guttirao,reactorcoolantloopseamlessforgedandformedpipefabricationspecification,app-pl01-t1-001(2008)
|
| [11] | 7songshukang,liuzhiying,zhengjianneng,denglintao,chenhongyu,thedevelopmentofmainpipeforthethird-generationap1000nuclearpowerplant,heavycastingandforging,1,1(2011)
|
| [12] | (宋树康,刘志颖,郑建能,邓林涛,陈红宇,第三代ap1000核电主管道的研制,大型铸锻件,1,1(2011))
|
| [13] | 8m.yazdani,s.m.abbasi,a.momeni,a.karimitaheri,hotductilityofafe-ni-coalloyincastandwroughtconditions,materialsanddesign,32(5),2956(2011)
|
| [14] | 9m.c.mataya,e.r.nilsson,e.l.brown,g.krauss,hotworkingandrecrystallizationofas-cast316l,metallurgicalandmaterialstransactionsa,34(8),1683(2003)
|
| [15] | 10jafarimeysam,najafizadehabbas,correlationbetweenzener-hollomonparameterandnecklacedrxduringhotdeformationof316stainlesssteel,materialsscienceandengineeringa,501(1-2),16(2009)
|
| [16] | 14renmeng,libaohua,themechanismandpreventingmethodofcrackingonthesteelingot,heavycastingandforging,3,36(1992)
|
| [17] | (任猛,李保华,钢锭开裂的机理及防止方法,大型铸锻件,3,36(1992))
|
| [18] | 15cuiyuexian,wangchangli,fractureanalysisofmetals(harbin,harbininstituteoftechnologypress,1998)p.39-40
|
| [19] | (崔约贤,王长利,金属断口分析(哈尔滨,哈尔滨工业大学出版社,1998)p.39-40)
|
| [20] | 16zhangyishuai,analysisandprocesscontrolofforgingcrackingforausteniticstainlesssteel316ln,master’sthesis,taiyuanuniversityoftechnology(2011)
|
| [21] | (张义帅,316ln不锈钢锻造裂纹分析及工艺控制,硕士学位论文,太原科技大学(2011))
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
