稀土<strong>Ce</strong>对<strong>X20Co</strong>马氏体耐热钢蠕变性能的影响

稀土Ce对X20Co马氏体耐热钢蠕变性能的影响

向钰琳¹^,², 杨仁贤³^,⁴, 蔡欣³, 胡小强³^,⁴(

), 李殿中³^,⁴(

)

Effect of Ce Addition on Creep Properties of X20Co Martensitic Heat-resistant Steel

XIANG Yulin¹^,², YANG Renxian³^,⁴, CAI Xin³, HU Xiaoqiang³^,⁴(

), LI Dianzhong³^,⁴(

)

图10. 三种不同Ce元素含量X20Co的最小蠕变速率与蠕变应力、温度倒数的对数曲线

Fig.10. Logarithmic curves of the minimum creep rate versus creep stress (δ) at 700^oC (a) and the minimum creep rate ( $ε ˙ m$ ) versus the reciprocal of temperature (1/T) under 100 MPa (b) of 0Ce, 5Ce and 12Ce steel