JIANG Yun-jian1, ZHANG Wen-jian2, LI Wen-bin21.Hebei Provincial Electric Power Research Institute. INFLUENCE OF LAVESPHASE AND Z-PHASE UPON CREEP OF P92 STEEL[J]. Thermal power generation, 2009, 38(8): 55-58.
JIANG Yun-jian1, ZHANG Wen-jian2, LI Wen-bin21.Hebei Provincial Electric Power Research Institute. INFLUENCE OF LAVESPHASE AND Z-PHASE UPON CREEP OF P92 STEEL[J]. Thermal power generation, 2009, 38(8): 55-58.DOI:
Laves相和Z相对P92钢蠕变的影响
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。
Abstract
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
but also will lead to the reduction of MX-phase in the matrix
decreasing the MX dispersion strengthening function.The formation of Z-phase in P92 steel has remarkable disadvantage to its creep rupture strength.