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TENSILE CREEP DEFORMATION AND DAMAGE BEHAVIOR IN A NICKEL-BASE SUPERALLOY AT 900℃ H.C.Yu1,H.C.Yang2,S.S.Xie3 (1.Beijing Institute of Aeronautical Materials, Beijing 100095, China;2.College of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;3.R & D Center, Baosteel Co. Ltd., Shanghai 201900, China) Abstract:The tensile creep deformation and damage evolution in a Ni......
J. Cent. South Univ. Technol. (2008) 15(s1): 013-016 DOI: 10.1007/s11771-008-304-4 Viscoelastoplastic constitutive model for creep deformation behavior of asphalt sand YE Yong(叶 永)1, 2, YANG Xin... results, and can reflect the total deformation characterization of asphalt sands. Key words: asphalt sand; viscoelastoplastic model; creep experiment; model parameters 1 Introduction Asphalt mixture......
℃, and therefore the alloy exhibits an obvious sensitivity of the applied temperatures. During creep, the deformation mechanism of the alloy is thought to be the twinning deformation and slipping of dislocation... on the grains boundaries along the direction vertical to the applied stress axis, and expands along the grain boundary up to fracture. 关键词:GH4169 superalloy; casting and rolling; creep; deformation......
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creep deformation can act as an effective barrier to basal slide systems, consequently, the movement of basal dislocation system is impeded, leading to the pile-up of a-type dislocation in Mg-5%Zn-2%Al.... Deformation mechanism maps [M]. Oxford: Pergamon Press, 1982: 44. [15] MORDIKE B L. Creep-resistant magnesium alloys [J]. Materials Science and Engineering A, 2002, 324: 103-112. [16] ZOU Hong-hui. Effects......
and the stresses from 25 MPa to 35 MPa. Key words: Mg alloy; aging treatment; creep deformation; stress exponent ... Compressive creep behavior of Mg-Sn binary alloy WEI Shang-hai(魏尚海), CHEN Yun-gui(陈云贵)?, TANG Yong-bai(唐永柏), LIU Ming(刘 明), XIAO Su-fen(肖素芬), ZHANG Xiao-ping(章晓萍), ZHAO Yuan-hua......
magnetic resonance porosity enhancement. The constant load induces increasing rock plastic deformation, volume, and creep aging damage. As the loading stress increases, the instantaneous rock elastic...-term strength of soft rock based on the creep test. ZHAO et al [11] conducted a uniaxial compression and grading loading creep test of red sandstone and summarized the creep deformation......
at the dam foundation of a hydropower station is weak sandstone with poor integrity and pore cementation contact. Its creep properties have a significant impact on the deformation and stability..., it has characteristics of large axial plastic deformation, obvious volumetric ductility dilation and large steady creep rate. The accelerated creep appears shortly after transient loading under......
:nickel-base single crystal superalloy; P-type and N-type structure; creep; activation energy; deformation features; [全文内容正在添加中] ...Influence of Pre-Compressive Creep on Internal Friction Stress and Creep Parameters of Nickel-Base Single Crystal Superalloys Cui Shusen1,Shang Lijuan1,Du Hongqiang1,Tian Sugui1,Yu Xingfu1,Zhao......
of triaxial compressive creep tests for five kinds of rock under the different stress loading, unloading and cycle-loading-unloading conditions, the creep deformation is not only a function of stress... deformation in aspects of constitutive models and formulations of the accelerating creep phase. For example, a non-liner viscous damper which can simulate the accelerating creep process was introduced......
