Characteristics of serrated flow in Al-Li single crystals

被引：0
作者：
Tian, BH [1 ]
Yan, MG
Zhang, YG
Chen, CQ
机构：
[1] Inst Aeronaut Mat, Beijing 100095, Peoples R China
[2] Beijing Univ Aeronaut & Astronaut, Dept Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 1998年 / 14卷 / 05期
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D O I：
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Serrated flow has been investigated in binary AI-Li single crystals treated from as-quenched to overaged conditions. Serrations were observed during the deformation of crystals aged from 10 to 100 h at 448 K, but not in the as-quenched and naturally aged conditions. The number of stress drops for serrations persistently increases within small stress drop limits as ageing time increases until attainment of peak-aged condition. Crystal orientations have some effects on stress drops for serrations.
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页码：465 / 469
页数：5
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共 16 条
  • [1] PLASTIC-DEFORMATION AND THE FLOW-STRESS OF ALUMINUM LITHIUM ALLOYS
    BEHNOOD, N
    EVANS, JT
    [J]. ACTA METALLURGICA, 1989, 37 (02): : 687 - 695
  • [2] ON A PSEUDO-PORTEVIN-LE-CHATELIER EFFECT
    BRECHET, Y
    ESTRIN, Y
    [J]. SCRIPTA METALLURGICA ET MATERIALIA, 1994, 31 (02): : 185 - 190
  • [3] DIEGO N, 1993, PHYS REV B, V48, P6781
  • [4] INTERACTION BETWEEN LITHIUM ATOMS AND DISLOCATIONS IN AL-LI SOLID-SOLUTIONS
    EVANS, JT
    [J]. SCRIPTA METALLURGICA, 1987, 21 (11): : 1435 - 1438
  • [5] EFFECT OF PRECIPITATION HARDENING ON STRAIN RATE SENSITIVITY AND YIELD BEHAVIOR IN AN AL-MG-SI ALLOY
    HARUN, HJ
    MCCORMICK, PG
    [J]. ACTA METALLURGICA, 1979, 27 (01): : 155 - 159
  • [6] SERRATED FLOW AND NEGATIVE RATE SENSITIVITY IN AL-LI BASE ALLOYS
    HUANG, JC
    GRAY, GT
    [J]. SCRIPTA METALLURGICA ET MATERIALIA, 1990, 24 (01): : 85 - 90
  • [7] Serrated yielding in Al-Li base alloys
    Ilic, N
    Drobnjak, D
    Radmilovic, V
    Jovanovic, MT
    Markovic, D
    [J]. SCRIPTA MATERIALIA, 1996, 34 (07) : 1123 - 1130
  • [8] Mechanism of serrated flow in binary Al-Li alloys
    Kumar, S
    Krol, J
    Pink, E
    [J]. SCRIPTA MATERIALIA, 1996, 35 (06) : 775 - 780
  • [9] EFFECT OF DELTA'-PRECIPITATES ON SERRATED FLOW
    KUMAR, S
    PINK, E
    [J]. SCRIPTA METALLURGICA ET MATERIALIA, 1995, 32 (05): : 749 - 753
  • [10] MODEL FOR PORTEVIN-LE CHATELIER EFFECT IN SUBSTITUTIONAL ALLOYS
    MCCORMICK, PG
    [J]. ACTA METALLURGICA, 1972, 20 (03): : 351 - +
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