摘要
本文采用预制有倾斜裂纹的四点弯曲试样研究了30CrMnSi钢的(Ⅰ+Ⅲ)复合型氢致开裂行为。实验结果表明:在连续充氢条件下,K_Ⅲ/K_Ⅰ+0～1.73范围内,不同复合比值的(Ⅰ+Ⅲ)复合型试样的氢致开裂敏感性大致相同。用三轴张力和塑性变形联合致氢富集的观点对上述结果进行了分析,发现塑性变形在氢致开裂过程中同样起着十分重要的作用。
Four-point-bend specimens of 30CrMnSiA steel have been employed to investigate (Ⅰ+Ⅲ) mixed-mode hydrogen induced cracking (HIC) with hydrogen continuously charging in 1NH_2SO_4 solution. The experimental results showed that the different specimens exhibited almost the sams HIC susceptibility with KⅢ/ K_Ⅰ ratios ranging from 0 to 1.73. In the light of different characteristics of hydrogen accumulation due to hydrostatic stress gradient and plastic deformation above experimental results were discussed.
出处
《腐蚀科学与防护技术》
CAS
CSCD
1993年第3期197-202,共6页
Corrosion Science and Protection Technology
基金
国家自然科学基金
关键词
复合型
三轴张力
塑性变形
合金钢
mixed-mode
hydrostatic stress
plastic deformation
