Transition of creep mechanism by solute hydrogen in Zircaloy-4

被引：4

作者：

Matsunaga, Tetsuya ^{[1
,2
]}

Hongo, Hiromichi ^{[1
]}

Tabuchi, Masaaki ^{[1
]}

Satoh, Yuhki ^{[2
]}

Abe, Hiroaki ^{[2
]}

机构：

[1] Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan

[2] Tohoku Univ, Inst Mat Res, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 684卷

关键词：

Zircaloy-4; Creep; Solute hydrogen; Straight dislocation; Dislocation network; Cross-slip; JOGGED-SCREW MODEL; ZIRCONIUM ALLOYS; BEHAVIOR; DEFORMATION; EVOLUTION;

D O I：

10.1016/j.msea.2016.12.057

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of solute hydrogen up to 200 ppm on the creep mechanism of Zircaloy-4 was discussed to ascertain the safety of nuclear power plants. Creep tests performed at 673 K and revealed that the addition of solute hydrogen decreased the creep rate in intermediate stress regions. According to the followed transmission electron microscopy, the phenomenon reflected the change of rate-controlling mechanisms without or with solute hydrogen: cross-slip in a non-hydrogenated sample with H=10 ppm; solute-atmosphere dragging process in hydrogenated samples with H=100 and 200 ppm. Because cross-slip works as the annihilation process for the glide dislocations in Zircaloy-4, it is considered that the suppression of cross-slip by solute hydrogen leads to a decrease in the creep rate.

引用

页码：191 / 195

页数：5

共 30 条

[1] THE ANALYSIS OF DISLOCATION NETWORKS FORMED IN ZIRCALOY-4 DURING HIGH-TEMPERATURE CREEP [J].

ARMAS, I ;

BOCEK, M .

JOURNAL OF NUCLEAR MATERIALS, 1983, 115 (2-3) :263-270

[2] BRITTLE-FRACTURE INDUCED BY HYDRIDES IN ZIRCALOY-4 [J].

BAI, JB ;

PRIOUL, C ;

LANSIART, S ;

FRANCOIS, D .

SCRIPTA METALLURGICA ET MATERIALIA, 1991, 25 (11) :2559-2563

[3] DISTRIBUTION OF SOLUTE ATOMS ROUND A SLOW DISLOCATION [J].

COTTRELL, AH ;

JASWON, MA .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1949, 199 (1056) :104-114

[4] A MICROSTRUCTURAL INVESTIGATION OF STEADY-STATE CREEP OF ZIRCALOY-4 AT 973-K [J].

ECOB, RC ;

DONALDSON, AT .

JOURNAL OF NUCLEAR MATERIALS, 1985, 132 (02) :110-125

[5] THERMALLY ACTIVATED DEFORMATION OF CRYSTALLINE MATERIALS [J].

EVANS, AG ;

RAWLINGS, RD .

PHYSICA STATUS SOLIDI, 1969, 34 (01) :9-&

[6] Modelling and prediction of mechanical properties for materials with hexagonal symmetry (zinc, titanium and zirconium alloys) [J].

Fundenberger, JJ ;

Philippe, MJ ;

Wagner, F ;

Esling, C .

ACTA MATERIALIA, 1997, 45 (10) :4041-4055

[7] Creep of zirconium and zirconium alloys [J].

Hayes, Troy A. ;

Kassner, Michael E. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (08) :2389-2396

[8] MECHANISM OF HIGH TEMPERATURE YIELD POINT PHENOMENON IN SOME ALUMINIUM ALLOYS [J].

HORIUCHI, R ;

YOSHINAG.H .

TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS, 1965, 6 (03) :131-&

[9]

Kameyama Tatsuya, 2010, Journal of Japan Institute of Light Metals, V60, P111

[10] Role of twinning in the hardening response of zirconium during temperature reloads [J].

Kaschner, GC ;

Tomé, CN ;

Beyerlein, IJ ;

Vogel, SC ;

Brown, DW ;

McCabe, RJ .

ACTA MATERIALIA, 2006, 54 (11) :2887-2896

← 1 2 3 →