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718Plus合金η相析出行為及其對(duì)熱變形行為影響研究
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1.天津重型裝備工程研究有限公司;2.中國第一重型機(jī)械股份公司

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黑龍江省自然科學(xué)基金項(xiàng)目JQ2021E007


Study on Precipitation Behavior of η Phase and the effect on Hot Derformation in 718Plus alloy
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Natural Science Foundation of Heilongjiang Province（JQ2021E007）

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    摘要:

    研究了718Plus合金中η相的析出行為及溶解規(guī)律。研究了無η相析出、少量η相析出、大量η相析出的試樣經(jīng)不同壓縮量壓縮后的再結(jié)晶組織。研究了少量η相析出的試樣在不同條件下壓縮后的再結(jié)晶組織。結(jié)果表明， 718Plus合金中?相析出峰值溫度在900℃。?相溶解受時(shí)間影響較大，在1040℃固溶2小時(shí)后?相可完全溶解。預(yù)先析出少量?相在大變形過程中有利于動(dòng)態(tài)再結(jié)晶的發(fā)生，而大量析出?相在大變形過程中抑制動(dòng)態(tài)再結(jié)晶的發(fā)生。在大變形量、合適的溫度、合適的變形速率下，預(yù)先析出的少量?相與動(dòng)態(tài)再結(jié)晶過程相互作用，有利于獲得均勻、細(xì)小的晶粒組織。

    Abstract:

    The precipitation behavior and dissolution behavior of η-phase of 718Plus alloy are studied. By the thermal compression with different compression amount, the effect of different quantities of η-phase on the recrystallization was studied. Recrystallization behaviors of samples with little η-phase compressed at different conditions were studied. The results show that, the peak temperature of η-phase precipitation occurred at 900℃. The dissolve behavior of η-phase was mainly effected by solution time, and it dissolve effectively after 2 hours at temperature of 1040℃. Small quantity of η-phase contributes to dynamic recrystallization in large deformation process while large quantity of η-phase restrain dynamic recrystallization. At appropriate deformation temperature and rate, small quantity of η-phase interacted with the dynamic recrystallization process, which makes for the uniform fine crystal structure.

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寇金鳳,白亞冠,張鑫,郭偉,張冰冰,李紅梅,聶義宏.718Plus合金η相析出行為及其對(duì)熱變形行為影響研究[J].稀有金屬材料與工程,2024,53(12):3465~3474.[kou jinfeng, bai yaguan, zhang xin, guo wei, zhang bingbing, li hongmei, nie yihong. Study on Precipitation Behavior of η Phase and the effect on Hot Derformation in 718Plus alloy[J]. Rare Metal Materials and Engineering,2024,53(12):3465~3474.]
DOI：10.12442/j. issn.1002-185X.20230655

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  • 收稿日期:2023-10-20
  • 最后修改日期:2023-12-04
  • 錄用日期:2023-12-18
  • 在線發(fā)布日期: 2024-12-23
  • 出版日期: 2024-12-16