| 查看: 617 | 回复: 3 | |||
| 【奖励】 本帖被评价1次，作者hslining增加金币 1 个 | |||
| 当前主题已经存档。 | |||
[资源]
【原创】Acta Materialia - Article in Press, Corrected Proof
|
|||
|
Studies of shear band velocity using spatially and temporally resolved measurements of strain during quasistatic compression of a bulk metallic glass Wendelin J. Wrighta, M.W. Samalea, T.C. Hufnagelb, M.M. LeBlancc and J.N. Florandoc aSanta Clara University, Dept. of Mechanical Engineering, Santa Clara, CA 95053, USA bJohns Hopkins University, Dept. of Materials Science and Engineering, Baltimore, MD 21218, USA cLawrence Livermore National Laboratory, Livermore, CA 94550, USA Received 5 May 2009; revised 10 June 2009; accepted 11 June 2009. Available online 23 July 2009. Abstract We have made measurements of the temporal and spatial features of the evolution of strain during the serrated flow of Pd40Ni40P20 bulk metallic glass tested under quasistatic, room temperature, uniaxial compression. Strain and load data were acquired at rates of up to 400 kHz using strain gages affixed to all four sides of the specimen and a piezoelectric load cell located near the specimen. Calculation of the displacement rate requires an assumption about the nature of the shear displacement. If one assumes that the entire shear plane displaces simultaneously, the displacement rate is approximately 0.002 m s–1. If instead one assumes that the displacement occurs as a localized propagating front, the velocity of the front is approximately 2.8 m s−1. In either case, the velocity is orders of magnitude less than the shear wave speed (  2000 m s−1). The significance of these measurements for estimates of heating in shear bands is discussed.Keywords: Metallic glasses; Shear band velocity; Plastic deformation; Compression test [ Last edited by hslining on 2009-9-10 at 16:53 ] |
回复此楼» 猜你喜欢
药学硕士，第一、第二作者已发表6 篇 SCI，药理方向及相关方向2026年/2027年博士申请
已经有4人回复
-
26年博士申请自荐-电催化
已经有3人回复
-
中国地质大学（北京）博士招生补录，数理学院材料科学与工程专业和材料与化工专业
已经有6人回复
-
收到国自然专家邀请后几年才会有本子送过来评
已经有4人回复
-
考博
已经有5人回复
-
26年申博自荐-计算机视觉
已经有4人回复
-
药化及相关博士的申请
已经有3人回复
-
一篇MDPI论文改变了学习工作和生活
已经有4人回复
2楼2009-08-02 10:34:04
3楼2009-08-02 16:17:49
4楼2009-08-04 08:51:41