|
|
|
Abstract Hydrogen induced delayed cracking of charged smooth torsional specimens was observed on the planes inclined at an angle of 45° (clockwise twisting) or-45°(counter-clockwise twisting)to the torsional axis, after a large enough torque had been sustained for a long time. Calculation shows that if the strain field of an interstitial hydrogen atom in α-Fe has tetragonal symmetry, the interactive energy between the strain field and the torsional stress field has a minimal value on the planes inclined at an angle of 45°. Hydrogen atoms will diffuse to and be enriched on the planes and then hydrogen induced delayed cracking can occur on the planes, when the hydrogen concentration on the planes reaches a critical value. For a charged notched or cracked torsional specimen, i. e. Type Ⅲ crack, above conclusions are also correct.
|
|
Received: 25 April 1984
|
[1] Chu Wuyang(褚武扬);Hsiao Chimei(肖纪美);Li Shiqiong(李世琼),Corrosion,37,320,514(1981)
[2] 褚武扬编著,氢损伤与氢致开裂,第六章,冶金出版社,(待出版)
[3] Thompsom, A. W.; Bernstein, I. M., Hydrogen in Metals, Proceeding of 2-nd JIM International Symposium, 598(1979)
[4] 褚武扬,肖纪美,朱淑彦,王枨,中国腐蚀与防护学报,2,3,15(1982)
[5] Chu Wuyang(褚武扬),Hsiao Chimei(肖纪美),Ju Shuryahn(朱淑彦),Corrosion,38,446(1982)
[6] Hirth, J. P., Met. Trans., 11A, 861(1980)
[7] Li, J. C. M.; Oriani, R. A.; DarKen, L. S., Zeit. Phys. Chem., 49, 271 (1966) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
