维普中文期刊产品整合服务
2篇 您的检索式:作者名="MATTERN Norbert"
    题名 作者 年代 出处 被引量
1Deformation induced structural evolution in bulk metallic glasses显示文摘The structural behavior of binary Cu50Zr50 and ternary Cu50Zr45Ti5 bulk metallic glasses (BMGs) under applied stress was investigated by means of in-situ high energy X-ray synchrotron diffraction. The components of the strain tensors were determined from the shifts of the maxima of the atomic pair correlation functions (PDF) in real space. The anisotropic atomic reorientation in the first-nearest-neighbor shell versus stress suggests structural rearrangements in short-range order. Within the plastic deformation range the overall strain of the metallic glass is equal to the yield strain. After unloading,the atomic structure returns to the stress-free state,and the short-range order is identical to that of the undeformed state. Plastic deformation,however,leads to localized shear bands whose contribution to the volume averaged diffraction pattern is too weak to be detected. A concordant region evidenced by the anisotropic component is activated to counterbalance the stress change due to the atomic bond reorientation in the first-nearest-neighbor shell. The size of the concordant region is an important factor dominating the yield strength and the plastic strain ability of the BMGs.WANG Gang MATTERN Norbert BEDNARCI Jozef XIA Lei ZHAI QiJie DONG YuanDa ECKERT Jvrgen 2011Chinese Science Bulletin2011,56,36:1
2块体非晶合金中变形引起的结构演化显示文摘块体非晶合金虽然具有优越的综合机械性能,然而室温塑形的缺失极大地限制了它的工程应用前景.为此,科学家们关注于非晶合金的变形机制,以求在理解其变形机制的基础上,探索提高块体非晶合金塑形的方法.块体非晶合金在压应力作用下,呈现出弹一塑形变形行为.王刚 MATTERN Norbert BEDNARCíJozef 夏雷 翟启杰 董远达 ECKERT Jürgen 2012科学通报2012,57,5:1
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费