HYDROGEN TRANSPORT THROUGH ANNEALED AND DEFORMED ARMCO IRON

被引：155

作者：

KUMNICK, AJ ^{[1
]}

JOHNSON, HH ^{[1
]}

机构：

[1] CORNELL UNIV,DEPT MAT SCI & ENGN,ITHACA,NY 14850

来源：

METALLURGICAL TRANSACTIONS | 1974年 / 5卷 / 05期

关键词：

D O I：

10.1007/BF02644334

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The diffusivity and solubility of hydrogen in ferrous materials near 300K are of substantial interest with respect to hydrogen brittleness. The characteristic disappearance of hydrogen brittleness at lower temperatures and high strain rates implies that hydrogen transport is an essential step in the brittleness mechanism. In the work reported, a sensitive electrochemical permeation technique was used to study hydrogen trapping in annealed and plastically deformed iron. The thermal stability of the trap structure was also investigated. Two types of hydrogen traps were indicated by transient measurements on membranes with different processing histories. Both are caused by deformation; only one of them could be removed by annealing. It is stated that these traps are not readily explained in terms of the stress field of a single dislocation and are probably associated with some feature of the dislocation cell structure caused by deformation.

引用

页码：1199 / 1206

页数：8

共 39 条

[21] KRUPOWSKI A, 1956, ARCHIWUM HUTNICTWA, V1, P101
[22] Lewis F. A., 1967, PALLADIUM HYDROGEN S
[23] MCBREEN J, 1966, J ELECTROCHEM SOC, V113, P1219
[24] MCBREEN J, 1965, THESIS U PENNSYLVANI
[25] MCNABB A, 1963, T METALL SOC AIME, V227, P618
[26] MICHALAK JT, 1961, T METALL SOC AIME, V221, P850
[27] NELSON HG, 1972, TND7265 NASA
[28] DIFFUSION AND TRAPPING OF HYDROGEN IN STEEL
ORIANI, RA
[J]. ACTA METALLURGICA, 1970, 18 (01): : 147 - &
[29] RACK HJ, 1968, THESIS MIT
[30] RACZYNSKI W, 1958, ARCH HUTN, V3, P59

← 1 2 3 4 →