Effect of martensitic phase transformation on the ductility of polycrystalline YCu

被引：10

作者：

Oertel, C. -G. ^{[1
]}

Schaarschuch, R. ^{[1
]}

Cao, G. H. ^{[2
]}

Tian, H. N. ^{[2
]}

Freudenberger, J. ^{[4
]}

Brokmeier, H. -G. ^{[3
]}

Skrotzki, W. ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Struct Phys, D-01062 Dresden, Germany

[2] Shanghai Univ, Dept Mat Engn, Shanghai 200072, Peoples R China

[3] Helmholtz Ctr Geesthacht, D-21494 Geesthacht, Germany

[4] IFW Dresden, Inst Metall Mat, D-01069 Dresden, Germany

来源：

SCRIPTA MATERIALIA | 2011年 / 65卷 / 09期

基金：

中国国家自然科学基金;

关键词：

YCu; Intermetallic compounds; Tension test; Martensitic phase transformation; Brittle-to-ductile transition; INTERMETALLIC COMPOUNDS; TEXTURE;

D O I：

10.1016/j.scriptamat.2011.07.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The tensile deformation behaviour of an extruded, polycrystalline YCu intermetallic compound was investigated from room temperature down to 77 K. A stress-induced martensitic transformation of the cubic B2 to the orthorhombic B27 phase was observed. The increasing amount of B27 phase with decreasing temperature leads to a decrease in ductility. A drastic decrease sets in at about 160 K when thermally induced martensite is formed, characterizing the brittle-to-ductile transition of YCu. Reasons for the relatively high ductility above 160 K are discussed. (C) 2011 Acta Materialia line. Published by Elsevier Ltd. All rights reserved.

引用

页码：779 / 782

页数：4

共 14 条

[1] TEMPERATURE-RATE AND STRAIN-RATE DEPENDENCE OF THE FLOW-STRESS OF ULTRAPURE NIOBIUM SINGLE-CRYSTALS IN CYCLIC DEFORMATION [J].

ACKERMANN, F ;

MUGHRABI, H ;

SEEGER, A .

ACTA METALLURGICA, 1983, 31 (09) :1353-1366

[2] Room-temperature mechanical behavior of FeAl: Effects of stoichiometry, environment, and boron addition [J].

Cohron, JW ;

Lin, Y ;

Zee, RH ;

George, EP .

ACTA MATERIALIA, 1998, 46 (17) :6245-6256

[3]

*EUR UN FREE STAT, 137952379 EUR UN FRE

[4] A family of ductile intermetallic compounds [J].

Gschneidner, K ;

Russell, A ;

Pecharsky, A ;

Morris, J ;

Zhang, ZH ;

Lograsso, T ;

Hsu, D ;

Lo, CHC ;

Ye, YY ;

Slager, A ;

Kesse, D .

NATURE MATERIALS, 2003, 2 (09) :587-590

[5] STRUCTURAL INSTABILITY IN RCU INTERMETALLIC COMPOUNDS [J].

IBARRA, MR ;

CHIEN, TS ;

PAVLOVIC, AS .

JOURNAL OF THE LESS-COMMON METALS, 1989, 153 (02) :233-243

[6]

KANENO Y, 2007, MATER RES SOC S P, V980, P1106

[7]

Klöden B, 2007, INT J MATER RES, V98, P276

[8] Ab initio calculation of bulk and defect properties of ductile rare-earth intermetallic compounds [J].

Morris, JR ;

Ye, YY ;

Lee, YB ;

Harmon, BN ;

Gschneidner, KA ;

Russell, AM .

ACTA MATERIALIA, 2004, 52 (16) :4849-4857

[9] X-ray diffraction study of the phase purity, order and texture of ductile B2 intermetallics [J].

Mulay, R. P. ;

Wollmershauser, J. A. ;

Heisel, M. A. ;

Bei, H. ;

Russell, A. M. ;

Agnew, S. R. .

ACTA MATERIALIA, 2010, 58 (07) :2788-2796

[10]

Ozga P., 1999, GOTTINGER ARB GEO SB, VSB4, P146

← 1 2 →