摘要
综合国内外的研究成果,论述了Laves相和Z相对提高P92钢蠕变性能的影响。结果表明,Laves相形成初期对提高P92钢蠕变断裂强度有利,但当Laves相达到一定尺寸后对提高蠕变断裂强度不利;Z相析出不但增加了蠕变孔洞出现的几率,而且会造成MX相在基体中的减少,降低MX弥散强化的作用,Z相的析出对P92钢蠕变断裂有不良影响。
Summing up the research achievements at home and abroad, the influence of Laves- phase and Z - phase upon creep performance of P92 steel has been expounded. During initial formation period of Laves - phase,it is advantageous to the creep rupture strength of P92 steel, after the Laves - phase reaches a certain size,however,it is disadvantageous to the creep rupture strength;precipitation of Z- phase not only will increase the probability of creep cavities~ occurance,hut also will lead to the reduc- tion of MX -phase in the matrix, decreasing the MX dispersion strength ening function. The formation of Z- phase in P92 steel has remarkable disadvantage to its creep rupture strength.
出处
《热力发电》
CAS
北大核心
2009年第8期55-58,共4页
Thermal Power Generation
