金属学报
金屬學報
금속학보
ACTA METALLURGICA SINICA
2009年
7期
815-819
,共5页
杨树林%孙文儒%王健熙%王克亮%郭守仁%胡壮麒
楊樹林%孫文儒%王健熙%王剋亮%郭守仁%鬍壯麒
양수림%손문유%왕건희%왕극량%곽수인%호장기
GH761合金%P1细晶处理%力学性能
GH761閤金%P1細晶處理%力學性能
GH761합금%P1세정처리%역학성능
GH761 alloy%P%grain refining%mechanical property
研究了P含量对细晶GH761合金组织和性能的影响.结果表明:P含量在0.0007%--0.040%(质量分数)之间时,对合金的室温和650℃拉伸性能影响不大,但显著影响650 ℃/690 MPa下的持久性能和700℃/550 MPa下的蠕变性能.P含量在0.023%左右可成倍提高细晶合金的持久寿命,降低蠕变速率.细晶化和P微合金化相结合的方法可以在显著提高合金拉伸强度和塑性的同时,保持合金优良的持久和蠕变性能,从而全面优化合金的综合性能.
研究瞭P含量對細晶GH761閤金組織和性能的影響.結果錶明:P含量在0.0007%--0.040%(質量分數)之間時,對閤金的室溫和650℃拉伸性能影響不大,但顯著影響650 ℃/690 MPa下的持久性能和700℃/550 MPa下的蠕變性能.P含量在0.023%左右可成倍提高細晶閤金的持久壽命,降低蠕變速率.細晶化和P微閤金化相結閤的方法可以在顯著提高閤金拉伸彊度和塑性的同時,保持閤金優良的持久和蠕變性能,從而全麵優化閤金的綜閤性能.
연구료P함량대세정GH761합금조직화성능적영향.결과표명:P함량재0.0007%--0.040%(질량분수)지간시,대합금적실온화650℃랍신성능영향불대,단현저영향650 ℃/690 MPa하적지구성능화700℃/550 MPa하적연변성능.P함량재0.023%좌우가성배제고세정합금적지구수명,강저연변속솔.세정화화P미합금화상결합적방법가이재현저제고합금랍신강도화소성적동시,보지합금우량적지구화연변성능,종이전면우화합금적종합성능.
Effect of P content on the microstructure and mechanical properties of fine-grained GH761 alloy was studied.The results showed that no obvious effect on the tensile properties of finegrained GH761 alloy WaS observed when P content in GH761 alloy was below 0.040%(mass fraction).However,P influenced the stress rupture and creep properties greatly.The peak value of the life at 650℃and 690 Mpa appeared around 0.023%P.In comparison with that of the alloy with 0.0007%P,the life increased more than 2 times.At the same time,the creep rate of the alloy with 0.023%P is also the 10west in a11 of alloys.P iS beneficial to the mechanical properties of fine-grained GH761 alloy by improving the precipitation at grain boundaries and impeding the disclocation movement.The overall properties of GH761 alloy can be improved by grain refining and appropriate amount of P addition.