磁場對氫擴散及氫脆化之效應(Ⅰ)(Ⅱ)

Effects of Magnetic Field on Hydrogen Diffusion and Hydrogen Embrittlement in Metals

彭宗平

《防蝕工程》 9卷2期 (1995/06) Pp. 79-82

https://doi.org/10.6376/JCCE.199506.0079

摘要

本研究利用ASTM A387合金鋼，在充氫及未充氫狀況下，施予不同強度之磁場（最大0.16Tesla)，量測其機械性質之變化。研究發現充氫試片的上降伏點(UYP)及上下降伏強度差(Δσ)受磁場影響而下降，且磁場愈大，Δσ變異則變小，未充氫的試片其UYP與Δσ較不受磁場影響。磁場對鐵磁性合金機械性質的影響，可用磁場與差排之相互作用的理論解釋之。

關鍵字

磁場 ； 氫脆化 ； 降伏點 ； 抗拉強度

並列摘要

The low alloy steel ASTM A387 was used for the test. Specimens, cathodically charged or uncharged, were tensile tested in the presence of a magnetic field at a range of 0-0.16 tesla. The mechanical properties were measured. It was found that the UYP (upper yield point) and Δσ (yield drop) for charged specimens were substantially reduced in the magnetic field, whereas the variations of UYP and Δσ were relatively small for uncharged specimens. The scatter of Δσ for charged specimens decreased as the magnetic field increased.

並列關鍵字

magnetic field ； hydrogen embrittlemetn ； yield point ； tensile strength ； yield drop