Subtleties Behind Hydrogen Embrittlement of Cadmium-Plated 4340 Steel Revealed by Thermal Desorption Spectroscopy and Sustained-Load Tests

被引：19

作者：

Bellemare, J. ^{[1
]}

Laliberte-Riverin, S. ^{[1
]}

Menard, D. ^{[1
]}

Brochu, M. ^{[1
]}

Sirois, F. ^{[1
]}

机构：

[1] Polytech Montreal, Montreal, PQ H3T 1J4, Canada

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2020年 / 51卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

STRENGTH; FRACTURE; ELECTRODEPOSITION; PLASTICITY; STRESS; NI;

D O I：

10.1007/s11661-020-05741-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal desorption spectroscopy (TDS) and sustained-load tests were used to investigate hydrogen embrittlement (HE), hydrogen profiles and the impact of the baking delay of cadmium-plated 4340 steel-notched bars. The results show a tremendous concentration of hydrogen in the cadmium coatings (200 to 1500 ppma) that does not contribute to HE. Hydrogen in manganese sulfide (MnS) traps was also found not to contribute to HE. The total hydrogen concentration measured by TDS is thus not suitable to determine an embrittlement threshold. Subtracting hydrogen in cadmium and MnS traps from total hydrogen allowed finding a true critical hydrogen concentration threshold of 0.6 ppma (0.01 ppmm). No impact of the baking delay was found.

引用

页码：3054 / 3065

页数：12

共 36 条

[1] ROLE OF ADSORBED CN GROUPS IN HYDROGEN EMBRITTLEMENT OF STEEL [J].