机械工程材料
機械工程材料
궤계공정재료
Materials for Mechanical Engineering
2015年
11期
41-43
,共3页
P92 钢%时效%沉淀相
P92 鋼%時效%沉澱相
P92 강%시효%침정상
P92 steel%aging%precipitation phase
通过在650℃等温时效,采用物理化学相分析、X射线衍射等方法研究了不同时效时间下P92钢中沉淀相的转变规律。结果表明：未经时效处理的P92钢中沉淀相主要为M23 C6和MX相,其中M23 C6占绝大多数；随着时效时间的延长,沉淀相总含量不断增加,M23 C6含量缓慢增加, Laves相大量析出；时效3000 h后,M23 C6、MX 和Laves相的含量基本趋于稳定；沉淀相总量的变化主要受Laves相析出量的影响。
通過在650℃等溫時效,採用物理化學相分析、X射線衍射等方法研究瞭不同時效時間下P92鋼中沉澱相的轉變規律。結果錶明：未經時效處理的P92鋼中沉澱相主要為M23 C6和MX相,其中M23 C6佔絕大多數；隨著時效時間的延長,沉澱相總含量不斷增加,M23 C6含量緩慢增加, Laves相大量析齣；時效3000 h後,M23 C6、MX 和Laves相的含量基本趨于穩定；沉澱相總量的變化主要受Laves相析齣量的影響。
통과재650℃등온시효,채용물이화학상분석、X사선연사등방법연구료불동시효시간하P92강중침정상적전변규률。결과표명：미경시효처리적P92강중침정상주요위M23 C6화MX상,기중M23 C6점절대다수；수착시효시간적연장,침정상총함량불단증가,M23 C6함량완만증가, Laves상대량석출；시효3000 h후,M23 C6、MX 화Laves상적함량기본추우은정；침정상총량적변화주요수Laves상석출량적영향。
The precipitate phase transformation in P92 steel during isothermal aging at 650 ℃ for different times was investigated by physicochemical phase analysis and XRD analysis.The results show that the precipitates in P9 2 steel under the as-received condition primarily consisted of M23 C6 carbides and MX phase.With the prolongation of the aging time,the total precipitation content increased continuously.The content of M23 C6 increased slightly,while Laves phase nucleated and grew rapidly during aging.After aged for 3 000 h,the content of M23 C6 ,MX and Laves phase seemed to be stable.Laves phase content plays a key role in the variation of total precipitation content.
