HYDROGEN PERMEATION AND DIFFUSION IN A 0.2C-13CR MARTENSITIC STAINLESS-STEEL
HYDROGEN PERMEATION AND DIFFUSION IN A 0.2C-13CR MARTENSITIC STAINLESS-STEEL
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DOI：
10.1016/0956-716x(93)90383-4
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发表时间：
1993-10-01
期刊：
影响因子：
--
通讯作者：
WEI, BM
中科院分区：
文献类型：
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作者：
XU, J;YUAN, XZ;WEI, BM
工程合金，特别是合金钢的氢脆现象，长期以来一直受到材料研究者的关注。目前，人们认为这种现象的发生与氢在金属中的进入和传输过程有关。因此，人们对氢在金属和合金中的渗透和扩散进行了大量的研究。尽管如此，关于氢在马氏体组织钢中的渗透和扩散的知识仍然有限。在对马氏体[1-5]进行的大多数研究中，都是采用电化学渗透技术进行测量，因此只测定了环境温度附近的有限数据。在较高温度下得到的一些结果也非常分散。例如，AISI4130钢在调质(马氏体)状态下的氢扩散系数[6]比深冷变形301不锈钢(含90‘马氏体量)[7]高2个数量级。本文用气体渗透技术测定了大致相当于AISI420的0.2C-13Cr马氏体不锈钢(2Cr13)的氢渗透率和扩散系数。测量是在环境温度以上进行的。
The phenomenon of hydrogen embrittlement for engineering alloys, especially for alloy steels, has long attracted the attention of material researchers. Presently, it is thought that the occurrence of the phenomenon correlates with the processes of hydrogen entry and transport in metals. Therefore, a great effort has been made to understand the hydrogen permeation and diffusion in metals and alloys. Even so, the knowledge of the hydrogen permeation and diffusion in steels with a martensitic structure is still limited. In most of the investigations performed on martensite [1-5], the electrochemical permeation technique was employed for measurement; hence, only limited data near ambient temperature have been determined. A few results obtained at higher temperature are very scattered also. For instance, the hydrogen diffusivity of AISI 4130 steel in the quenched and tempered (martensite) condition [6] is 2 orders of magnitude higher than of cryoformed 301 stainless steel (containing 90~ of a'martensite)[7]. In the present work, the hydrogen permeability and diffusivity of a 0.2 C-13Cr martensitic stainless steel (2Cr13), roughly corresponding to AISI 420, was determined by means of the gaseous permeation technique. Measurements were made above ambient temperature.