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2524−T34合金疲劳裂纹的萌生和扩展行为
发布人：上海艾荔艾金属材料有限公司www.shailiai.com
更新时间：2015-12-17
通过四点弯曲疲劳试验研究2524−T34板材的疲劳性能，借助金相和扫描电镜观察疲劳裂纹的萌生和扩展行为。
2524−T34合金疲劳裂纹的萌生和扩展行为Initiation and propagation behavior of fatigue crack in 2524−T34 alloy
通过四点弯曲疲劳试验研究2524−T34板材的疲劳性能，借助金相和扫描电镜观察疲劳裂纹的萌生和扩展行为。结果表明：2524合金具有良好的疲劳性能，疲劳强度达到屈服强度的80%以上；疲劳裂纹主要在第二相粒子以及第二相粒子/基体界面萌生，裂纹扩展过程中的偏转与晶界的阻碍有关；相邻晶粒内两个有利滑移面之间的位向差是控制裂纹通过晶界扩展的重要因素。
The fatigue performance of 2524−T34 sheets was studied by four-point bend fatigue test. The fatigue crack initiation and propagation behavior were observed by optical microscopy and scanning electron microscopy. The results indicate that 2524 alloy shows superior fatigue properties. The fatigue strength is up to 80% of the yield strength. The fatigue crack mainly initiates from the second phase particles and the interface between the second phase particles and matrix. The crack plane deflection in the process of crack propagation relates to the resistance of the grain boundary. The difference of crystallographic orientation between the two favoured slip planes within the two neighboring grains is an important factor to control crack propagation across a grain boundary.
作为值得信赖的合作伙伴和高品质金属合金的半成品供应商，艾荔艾拥有完善的服务体系和专业的团队。在同客户交易的过程中，我们力求根据不同的应用需求将我们的产品做到精益求精。针对当前和未来的市场需求，艾荔艾致力于为客户提供最佳的金属材料解决方案。
AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
获取更多我们供应的合金和服务信息，请致电086-021-67660801或发电子邮件kefu@ailiaigroup.com联系我们，您也可以通过微博和微信和我们互动。
For more information on the alloys and services that we supply, call us at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on Weibo and Weixin.