CUBE PLANE SUPERDISLOCATION NETWORKS IN CREPT POLYCRYSTALLINE NI3AL

被引：4

作者：

RONG, TS ^{[1
]}

JONES, IP ^{[1
]}

SMALLMAN, RE ^{[1
]}

机构：

[1] UNIV BIRMINGHAM,IRC MAT HIGH PERFORMANCE APPLICAT,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1994年 / 69卷 / 03期

关键词：

D O I：

10.1080/01418619408242233

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polycrystalline Ni3Al with nominal composition 75at.% Ni-25at.% Al has been subjected to creep at 580-degrees-C under uniaxial compression and the dislocation structure examined by transmission electron microscopy. A superdislocation interaction between the two screw superpartial pairs with perpendicular Burgers vectors, [101] and [101BAR], but which share a common dissociation plane (010), leads to the formation of a node. Subsequently, superdislocation networks, which consist of an array of nodes on (010), form. A possible mechanism for the node formation is discussed. The equilibrium shape of the superdislocation network has been estimated.

引用

页码：597 / 613

页数：17

共 13 条

[1] (110) SLIP IN NI3AL CREPT AT 760-DEGREES-C ALONG [001] [J].

CARON, P ;

KHAN, T ;

VEYSSIERE, P .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1989, 60 (02) :267-281

[2] TWIST BOUNDARIES IN ORDERED ALLOYS [J].

CZERNICHOW, J ;

GUDAS, JP ;

MARCINKO.MJ ;

TSENG, WF .

METALLURGICAL TRANSACTIONS, 1971, 2 (08) :2185-+

[3]

FLINN PA, 1960, T AM I MIN MET ENG, V218, P145

[4] INTERACTION OF NONPARALLEL NONCOPLANAR DISLOCATIONS [J].

HARTLEY, CS ;

HIRTH, JP .

ACTA METALLURGICA, 1965, 13 (02) :79-&

[5] INVERSE CREEP IN NI3AL [J].

HAZZLEDINE, PM ;

SCHNEIBEL, JH .

SCRIPTA METALLURGICA, 1989, 23 (11) :1887-1891

[6]

HEMKER KJ, 1991, ACTA METALL MATER, V39, P1909

[7] ON INTERACTIONS OF SUPERLATTICE DISLOCATIONS IN NI3(AL,TI) - A WEAK-BEAM ANALYSIS [J].

KORNER, A .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1992, 66 (01) :103-118

[8] STEADY-STATE CREEP OF AN ALLOY BASED ON INTERMETALLIC COMPOUND NI3AL(GAMMA') [J].

NICHOLLS, JR ;

RAWLINGS, RD .

JOURNAL OF MATERIALS SCIENCE, 1977, 12 (12) :2456-2464

[9]

POPE DP, 1984, INT METALL REV, V29, P137

[10]

Read W.T., 1953, DISLOCATIONS CRYSTAL

← 1 2 →