Diffusivity, solubility and trapping behavior of hydrogen in alloys 600, 690tt and 800

被引:28
作者
Uhlemann, M [1 ]
Pound, BG
机构
[1] Inst Solid State & Mat Res, Dresden, Germany
[2] SRI Int, Menlo Park, CA 94025 USA
关键词
superalloys; hydrogen permeation; potentiostatic; galvanostatic; hydrogen absorption;
D O I
10.1016/S0010-938X(97)00167-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The permeation technique and a potentiostatic pulse technique were used to investigate the diffusivity, solubility, and trapping behavior of hydrogen (H) in three austenitic alloys: 600, 690tt and 800. The apparent diffusivity increases with nickel content, whereas the solubility decreases. The diffusivity decreases with cold work. In the alloys with 50% cold work, H is reversibly trapped in the stress field of dislocations. The rate constants for irreversible trapping paralleled the observed resistance to environmentally assisted cracking of the non-cold-worked alloys. The principal irreversible traps appeared to be carbide/carbonitride precipitates. Microvoids provided additional irreversible traps in precharged, cold-worked alloy 600. (C) 1998 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:645 / 662
页数:18
相关论文
共 42 条
[1]  
[Anonymous], MAT SCI ENG A
[2]   DIFFUSIVITY AND SOLUBILITY OF HYDROGEN AS A FUNCTION OF COMPOSITION IN FE-NI ALLOYS [J].
BECK, W ;
BOCKRIS, JO ;
GENSHAW, MA ;
SUBRAMAN.PK .
METALLURGICAL TRANSACTIONS, 1971, 2 (03) :883-&
[3]  
BERNSTEIN IM, 1990, P 4 INT C HYDR EFF M, P703
[4]   EFFECT OF TRAPPING ON HYDROGEN PERMEATION [J].
CASKEY, GR ;
PILLINGER, WL .
METALLURGICAL TRANSACTIONS, 1975, A 6 (03) :467-476
[5]  
COPSON HR, 1959, PHYSICAL METALLURGY, P247
[6]  
Coriou H., 1969, P C FUNDAMENTAL ASPE, P352
[7]   HYDROGEN EMBRITTLEMENT OF ULTRAPURE ALLOYS OF THE INCONEL 600 TYPE - INFLUENCE OF THE ADDITIONS OF ELEMENTS (C, P, SN, SB) [J].
CORNET, M ;
BERTRAND, C ;
BELO, MDC .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1982, 13 (01) :141-144
[8]   THE MECHANISM OF HYDROGEN EVOLUTION ON IRON IN ACID SOLUTIONS BY DETERMINATION OF PERMEATION RATES [J].
DEVANATHAN, MAV ;
STACHURSKI, Z .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1964, 111 (05) :619-623
[9]  
ENGELMANN HJ, 1993, WERKST KORROS, V44, P454
[10]  
ENGELMANN HJ, 1992, WERKST KORROS, V43, P161