【摘要】：對(duì)C質(zhì)量分?jǐn)?shù)分別為0.05%和0.09%的FGH96合金進(jìn)行了顯微組織和力學(xué)性能的分析。結(jié)果發(fā)現(xiàn):C元素含量較高時(shí),除了碳化物數(shù)量明顯增多外,還會(huì)在晶界處形成較大尺寸的塊狀MC碳化物;但是,C元素含量并未對(duì)原始顆粒邊界(prior particle boundary,PPB)、晶粒度及γ′相產(chǎn)生明顯的影響。C元素含量較高會(huì)提高FGH96合金在650℃時(shí)的抗拉強(qiáng)度和屈服強(qiáng)度,但會(huì)降低其塑性。在低周疲勞試驗(yàn)中,C元素含量較高,形成的大塊MC型碳化物分布于表面或亞表面,將會(huì)作為裂紋起源從而顯著降低合金的低周疲勞性能。
[Abstract]:The microstructure and mechanical properties of FGH96 alloy with 0.05% and 0.09% C by mass fraction were analyzed. The results show that in addition to the obvious increase in the number of carbides, the larger size MC carbides will be formed at grain boundaries when the content of% C is high. However, the content of C element does not have a significant effect on the original particle boundary (prior particle boundaryPPB), the grain size and 緯 'phase are obviously affected. The higher the content of C element, the higher the tensile strength and yield strength of FGH96 alloy at 650 鈩，

本文編號(hào)：2155882