Steady state power law creep resulting from dislocation substructure saturation being approached at higher stress

被引:3
|
作者
Chandler, H. D. [1 ]
机构
[1] Univ Witwatersrand, Sch Mech Ind & Aeronaut Engn, PO 2050 WITS, Johannesburg, Gauteng, South Africa
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2020年 / 771卷
关键词
Power law creep; Structure; Activation energy; Activation entropy;
D O I
10.1016/j.msea.2019.138622
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Steady state power-law creep is described assuming dislocation density tends to a saturated state at higher stresses as ln(stress). If the flow activation energy also follows this trend, substituting it into the Stokes - Einstein flow equation leads to strain rate being a power law function of stress.
引用
收藏
页数:3
相关论文
共 31 条
  • [21] On the relative accuracy of power law analyses for uniaxial low stress steady state high homologous temperature deformation
    Ayubali, Arsath Abbasali
    Shanmugavel, Balasivanandha Prabu
    Padmanabhan, K. A.
    MECHANICS OF MATERIALS, 2020, 140
  • [22] ESTIMATION OF THE STEADY-STATE INTERNAL TO THE APPLIED STRESS RATIO DIRECTLY FROM THE CREEP STRAIN-TIME PLOTS
    GHOSH, RN
    MITRA, SK
    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 1983, 36 (01): : 73 - 75
  • [23] WORK-HARDENING RATES DURING THE STEADY-STATE CREEP OF ALUMINUM AND ALLOYS DETERMINED FROM STRESS CHANGE TESTS
    NORTHWOOD, DO
    SMITH, IO
    JOURNAL OF METALS, 1984, 36 (12): : 4 - 4
  • [24] On the power law description of low-stress uni-axial steady-state high-homologous-temperature deformation
    Padmanabhan, K. A.
    Leuthold, J.
    Wilde, G.
    Bhattacharya, S. S.
    MECHANICS OF MATERIALS, 2015, 91 : 177 - 193
  • [25] WORK-HARDENING RATES DURING THE STEADY-STATE CREEP OF ALUMINUM AND ALLOYS DETERMINED FROM STRESS-CHANGE TESTS
    NORTHWOOD, DO
    SMITH, IO
    PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1985, 90 (02): : 563 - 572
  • [26] On using the minimum energy dissipation to estimate the steady-state of a flow network and discussion about the resulting power-law:application to tree-shaped networks in HVAC systems
    Soto-Frances, Victor-Manuel
    Pinazo-Ojer, Jose-Manuel
    Sarabia-Escriva, Emilio-Jose
    Martinez-Beltran, Pedro-Juan
    ENERGY, 2019, 172 : 181 - 195
  • [27] A simplified method for power-law modelling of metabolic pathways from time-course data and steady-state flux profiles
    Kitayama, Tomoya
    Kinoshita, Ayako
    Sugimoto, Masahiro
    Nakayama, Yoichi
    Tomita, Masaru
    THEORETICAL BIOLOGY AND MEDICAL MODELLING, 2006, 3
  • [28] Numerical investigation of steady state laminar natural convection of power-law fluids in side-cooled trapezoidal enclosures heated from the bottom
    Malkeson, S. P.
    Alshaaili, S.
    Chakraborty, N.
    NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2023, 83 (07) : 770 - 789
  • [29] On the power law description of low-stress uni-axial steady-state high-homologous-temperature deformation (vol 91, pg 177, 2015)
    Ali, A. Arsath Abbas
    Prabu, S. Balasivanandha
    Wilde, G.
    Padmanabhan, K. A.
    MECHANICS OF MATERIALS, 2018, 121 : 57 - 58
  • [30] Multiple steady state solutions for natural convection in a shallow horizontal rectangular cavity filled with non-Newtonian power-law fluids and heated from all sides
    Lamsaadi, M.
    Naimi, M.
    Hasnaoui, M.
    INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW, 2006, 16 (7-8) : 779 - 802