全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

激光冲击钛合金表面退火后的残余应力分布

, PP. 165-167

Keywords: 钛合金,激光冲击,退火,残余应力

Full-Text   Cite this paper   Add to My Lib

Abstract:

选用钛合金Ti-6Al-4V进行激光冲击成形实验,发现其表面产生很大的残余拉应力和残余压应力。对不同后处理工艺条件下表面的残余应力进行了研究,结果发现:钛合金成形凹面具有良好的力学性能稳定性,其表面残余压应力不会随着退火温度的提高而降低;而其成形凸面的残余拉应力随着退火温度的提高逐渐消退,在371℃退火后,钛合金凸面上82.67%的残余拉应力消除,剩余残余拉应力仅为20.6MPa。经过高温退火后的钛合金具有良好的抗疲劳性能,可以满足飞机结构件的使用要求。

References

[1]  Fabbro R,Peyre P,Berthe L,et al.Physics and applications of laser-shock processing[J].Laser Appl.,1998,10(6):265~279.
[2]  Garcia D B,Grandt A F.Fractographic examination of fretting induced cracks in Ti-6Al-4V[C]∥7th National Turbine Engine High Cycle Fatigue Conference,Palm Beach Gardens,2002:97~99.
[3]  Murthy H,Rajeev P T,Farris T N,et al.Fretting fatigue of Ti-tAl-4V subjected to blade/disk contact loading[C]∥Developments in Fracture Mechanics for the New Century,50th Anniversary of Japan Society of Materials Science,Osaka,2001:41~48.
[4]  Golden P J,Grandt A F.Characterization of fretting and fretting fatigue induced cracks in Ti-6Al-4V[C]∥4th National Turbine Engine High Cycle Fatigue Conference,Monterey,CA,1999.
[5]  任旭东,张永康,周建忠,等.涂层对钛合金激光冲击效果的影响[J].江苏大学学报:自然科学版,2006,27(1):10~13.
[6]  Zhang Y K,Zhang X R,Zhang S Y,et al.Investigation of the effect of laser treatment on the longitudinal and transverse velocity of an aluminum alloy[J].Journal of Applied Physics,2002,91(9):5 775~5 781.
[7]  Zhang Y K,Zhou J Z,Zuo D W,et al.Study on technology of flexible forming of sheet metal based on laser shock waves[J].Materials Science Forum,2004,471~472:453~456.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133