RELATION BETWEEN DUCTILITY AND GRAIN-BOUNDARY CHARACTER DISTRIBUTIONS IN NI3AL

被引：51

作者：

CHIBA, A ^{[1
]}

HANADA, S ^{[1
]}

WATANABE, S ^{[1
]}

ABE, T ^{[1
]}

OBANA, T ^{[1
]}

机构：

[1] IWATE MED UNIV, FAC ENGN, DEPT MET, MORIOKA, IWATE 020, JAPAN

来源：

ACTA METALLURGICA ET MATERIALIA | 1994年 / 42卷 / 05期

关键词：

D O I：

10.1016/0956-7151(94)90383-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The grain boundary character distributions in cast, recrystallized and strain annealed Ni3Al alloys with a composition of Ni-23Al were examined to clarify the relation between ductility and the grain boundary character distributions in Ni3Al. The percentages of CSL boundaries in cast, recrystallized and strain annealed Ni3Al alloys are 26.8, 43.1 and 58.4%, respectively, of the total number of boundaries examined. The sum of the percentages for LAB (Low Angle Boundary) and SIGMA3 boundary in cast, recrystallized and strain annealed Ni3Al alloys is 4.46, 10.8 and 29.2% respectively. This indicates that strain annealing is effective in enhancing the frequency of occurrence of CSL boundaries, especially LAB and E3 boundary, in Ni3Al. The strain annealed Ni3Al alloy having a much higher frequency of CSL boundaries is found to exhibit elongation to fracture of more than 45%. This significant increase in elongation of the strain annealed Ni3Al alloys is attributed to the presence of relatively low energy LAB and 13 boundaries.

引用

页码：1733 / 1738

页数：6

共 12 条

[1] STRUCTURE OF HIGH-ANGLE GRAIN BOUNDARIES [J].

BRANDON, DG .

ACTA METALLURGICA, 1966, 14 (11) :1479-&

[2] CORRELATION BETWEEN DUCTILITY AND ORDERING ENERGY OF NI3AL [J].

CHIBA, A ;

HANADA, S ;

WATANABE, S .

MATERIALS TRANSACTIONS JIM, 1990, 31 (09) :824-827

[3] DUCTILIZATION OF NI3AL BY MACROALLOYING WITH PD [J].

CHIBA, A ;

HANADA, S ;

WATANABE, S .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (08) :1799-1805

[4] IMPROVEMENT IN DUCTILITY OF NI3AL BY GAMMA-FORMER DOPING [J].

CHIBA, A ;

HANADA, S ;

WATANABE, S .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 152 (1-2) :108-113

[5] APPLICATION OF THE SELECTED AREA CHANNELING PATTERN METHOD TO THE STUDY OF INTERGRANULAR FRACTURE IN NI3AL [J].

HANADA, S ;

OGURA, T ;

WATANABE, S ;

IZUMI, O ;

MASUMOTO, T .

ACTA METALLURGICA, 1986, 34 (01) :13-21

[6] THEORETICAL AND EXPERIMENTAL DETERMINATIONS OF GRAIN-BOUNDARY STRUCTURES AND ENERGIES - CORRELATION WITH VARIOUS EXPERIMENTAL RESULTS [J].

HASSON, G ;

HERBEUVA.I ;

BOOS, JY ;

BISCONDI, M ;

GOUX, C .

SURFACE SCIENCE, 1972, 31 (01) :115-&

[7] INTERFACIAL ENERGIES OF TILT BOUNDARIES IN ALUMINIUM - EXPERIMENTAL AND THEORETICAL DETERMINATION [J].

HASSON, GC ;

GOUX, C .

SCRIPTA METALLURGICA, 1971, 5 (10) :889-&

[8] SLIDING BEHAVIOR AND DISLOCATION-STRUCTURES IN ALUMINUM GRAIN-BOUNDARIES [J].

KOKAWA, H ;

WATANABE, T ;

KARASHIMA, S .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1981, 44 (06) :1239-1254

[9] ON THE DISTRIBUTION OF SIGMA FOR GRAIN-BOUNDARIES IN POLYCRYSTALLINE NICKEL PREPARED BY STRAIN-ANNEALING TECHNIQUE [J].

LIM, LC ;

RAJ, R .

ACTA METALLURGICA, 1984, 32 (08) :1177-1181

[10]

LIN H, 1990, HIGH TEMPERATURE ORD, P391

← 1 2 →