• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Fracture and Strength of Solids >CRITICAL STRESS INTENSITY FACTOR DETERMINATION FOR AZ61 MAGNESIUM ALLOY
【24h】

CRITICAL STRESS INTENSITY FACTOR DETERMINATION FOR AZ61 MAGNESIUM ALLOY

机译：AZ61镁合金的临界应力强度因子测定

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A stress intensity factor K was used as a fracture parameter to determine the plane strain fracture toughness K_(IC) of AZ61 magnesium alloy using a single edge notch bend (SENB) specimen in accordance to ASTM E399 testing method. Five different specimen thicknesses of 2 to 10 mm were used in the test. A sharp fatigue pre-crack was initiated and propagated to half of specimen width at a constant crack propagation rate of about 1 x 10~(-8) m/cycle before the specimen was loaded in tension until the fracture stress is reached and then rapid fracture occurred. The fracture toughness Kc values obtained for different thicknesses showed that K_c value decreased with increasing specimen thickness. The highest K_c value obtained was 16.5 MPaVm for 2 mm thickness specimen. The value of K_c became relatively constant at about 13 MPaVm when the specimen thickness exceeds 8 mm. This value was then considered as the plane strain fracture toughness K_(IC) of AZ61 magnesium alloy. Calculation of the minimum thickness requirement for plane strain condition and the size of the shear lips of the fracture surface validate the obtained K_(IC) value.
机译：根据ASTM E399测试方法，使用根据ASTM E399测试方法使用单个边缘凹口弯曲（SENB）样本来确定应力强度因子K作为骨折参数以确定AZ61镁合金的平面应变断裂韧性K_（IC）。测试中使用5种不同的样品厚度为2至10毫米。在将样品加载到张力张力之前，以恒定的裂纹传播速率引发急剧疲劳预裂纹并以约1×10〜（-8）m /循环的一半，直至达到断裂应力骨折发生。针对不同厚度获得的断裂韧性KC值表明K_C值随着样品厚度的增加而降低。获得的最高K_C值为2mm厚度标本为16.5mPAVM。当样品厚度超过8mm时，K_C的值在约13mpavm处变得相对恒定。然后将该值视为AZ61镁合金的平面应变断裂韧性K_（IC）。计算平面应变状态的最小厚度要求和断裂表面的剪切唇尺寸的尺寸验证所获得的K_（IC）值。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号