重轨钢氢脆的表现形式及规律

中国腐蚀与防护学报

1997, Vol. 17

Issue (2): 129-134

研究报告

本期目录 | 过刊浏览

重轨钢氢脆的表现形式及规律

黄长河;李金许;王燕斌;褚武扬;梅冬生;俞梦文;籍可镔

北京科技大学;北京100083;北京科技大学;北京100083;北京科技大学;北京100083;北京科技大学;北京100083;攀枝花钢铁公司;攀枝花710076;攀枝花钢铁公司;攀枝花710076;攀枝花钢铁公司;攀枝花710076

HYDROGEN DAMAGE AND HYDROGEN-INDUCED CRACKING FOR RAIL STEEL

HUANG Changhe LI Jinxu WANG Yanbin CHU Wuyang (University of Science and Technology Beijing 100083)MEI Dongsheng YU Mengwen JI Kebin (Panzhihua Iron and steel Co. Panzhihua 710076)

全文: PDF(534 KB)

摘要: PD_3重轨钢产生氢致不可逆损伤的临界可扩散氢浓度为Co(P)=(2.07±0.49)×10~(-4)％;而产生氢致塑性损失和滞后断裂的临界值约为0.26×10~(-4)％。相对塑性和C_0~(-1)成正比,即δ_H/δ_0=-0.05+0.27/Co。氢致滞后断裂归一化门槛值为σ_(th)σ_f=0.27ln(C_(th)/Co)_2C(th)=9.5×10~(-4)％是氢致断裂的临界氢富集浓度。

关键词 ：重轨钢, 氢致不可逆损伤, 氢致塑性损失, 氢致断裂

Abstract：Critical concentrations of diffusible hydrogen and total hydrogen for hydrogen-induced irreversible damage were C0(P)=(2.07±0.49)×10-4% and C(P)=(3.13±0.59)×10-4%,respectively. The critical concentration of diffusible hydrogen for hydrogen-induced ductility loss and delayed failure, however, was about 0.26×10-4%. The elongation ratio of the charged specimen to uncharged one was directly proportional to C0-1, i.e., δH/δ0=-0.05±0.27/C0. The normalized threshold stress for hydrogen-induced delayed failure σth/σf was σth/σf = 0.27ln(Cth/C0) where σf is the ultimate tensile strength, Cth = 9.5 × 10-4% being the critical concentration of accumulated hydrogen necessary to hydrogen-induced cracking.

Key words： Rail steel Hydrogen induced irreversible damage Hydrogen induced ductility loss Hydrogen induced cracking

收稿日期: 1997-04-25

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引用本文:

黄长河;李金许;王燕斌;褚武扬;梅冬生;俞梦文;籍可镔. 重轨钢氢脆的表现形式及规律[J]. 中国腐蚀与防护学报, 1997, 17(2): 129-134.
. HYDROGEN DAMAGE AND HYDROGEN-INDUCED CRACKING FOR RAIL STEEL. J Chin Soc Corr Pro, 1997, 17(2): 129-134.

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y1997/V17/I2/129

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[2]	曹卫杰;杨晓雷;高桦. 环境诱导氢致断裂的非比例过载效应[J]. 中国腐蚀与防护学报, 1996, 16(3): 181-186.
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