【摘要】 用(α+γ)双相不锈钢试样研究了扫描电镜下的原位变形在预充氢试样的氢脆研究方面的应用问题,发现预充氢试样在扫描电镜下拉伸,在氢致裂纹的形核和扩展方面会出现假象。辅助实验还表明(α+γ)双相不锈钢中氢致裂纹优先在α相内形核和扩展,γ相阻碍裂纹扩展。更多还原

【Abstract】 Application of SEM in situ for studying deformation of hydrogen embrittlement of the specimen Charged with hydrogen has been investigated with (α+γ) duplex stainless steel. It was observed that the specimen charged with H would produce false appearance in nucleation and propagation of hydrogen-induced cracking, and additional experiments showed that hydrogen induced cracking is easy to form and grow in a-phase, but is obstructed in γ-phase.更多还原