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| HYDROGEN INDUCED EMBRITTLEMENT OF ROTOR STEEL 34CrNi3Mo |
| by KANG Datao; LIAO BO (Northeast Heavy Machinery Institute);CHEN Lian;; LIU Minzhi(Institute of Metal Research;Academia Sinica; Shenyang)(Manuscript received 15 April; 1985) |
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Cite this article:
by KANG Datao; LIAO BO (Northeast Heavy Machinery Institute);CHEN Lian;; LIU Minzhi(Institute of Metal Research;Academia Sinica; Shenyang)(Manuscript received 15 April; 1985). HYDROGEN INDUCED EMBRITTLEMENT OF ROTOR STEEL 34CrNi3Mo. Acta Metall Sin, 1987, 23(5): 391-395.
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Abstract The hydrogen-induced embrittlement of rotor steel 34CrNi3Mo was studied by means of slow tensile test of specimens with various hydrogen contents. With the increase of hydrogen content in the steel and the retardation of strain rate, its plasticity drops sharply till almost wholly lost when hydrogen stexceeded 5mL/100g and strain rate was down to 3×10~(-5)s~(-1). The hydrogen content of steel to free flake or hydrogen-induced embrittlement is limited to 2 or 1.48mL/100g respectively. SEM observation shows that the flakes in slow tensile tested specimens revealed their elliptical freckles of sharp boundaries and the micromorphology is transgranular quasi-cleavage consisting of clear tearing ridges and tiny quasi-cleavage planes.
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Received: 18 May 1987
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2 东北重型机械学院,第一重型机器厂,一机部情报研究所.大锻件热处理,机械工业出版社,1974
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4 Bernstein I M, Thompson A W.Inter Metal Rev, 1976; 21: 269
5 Troiano A R. Trans ASME, 1960; 52: 54 |
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