宽厚板
寬厚闆
관후판
WIDE AND HEAVY PLATE
2014年
2期
1-4
,共4页
磷含量%热处理工艺%冷却速度%组织性能
燐含量%熱處理工藝%冷卻速度%組織性能
린함량%열처리공예%냉각속도%조직성능
P Content%Heat treatment process%Cooling rate%Microstructure and mechanical properties
对高磷含量的热轧低温压力容器钢板进行常规正火及亚温正火处理，观察其显微组织并分析不同条件下钢板的力学性能。结果显示，采用合适的亚温正火工艺，可以使含磷量较高的低温容器用钢板在满足材料强度的前提下获得更好的韧性，尤其是能够获得更好的低温韧性。通过分析亚温正火处理后不同冷速下钢板的组织性能，发现增大冷却速度可以进一步提高钢板的性能。
對高燐含量的熱軋低溫壓力容器鋼闆進行常規正火及亞溫正火處理，觀察其顯微組織併分析不同條件下鋼闆的力學性能。結果顯示，採用閤適的亞溫正火工藝，可以使含燐量較高的低溫容器用鋼闆在滿足材料彊度的前提下穫得更好的韌性，尤其是能夠穫得更好的低溫韌性。通過分析亞溫正火處理後不同冷速下鋼闆的組織性能，髮現增大冷卻速度可以進一步提高鋼闆的性能。
대고린함량적열알저온압력용기강판진행상규정화급아온정화처리，관찰기현미조직병분석불동조건하강판적역학성능。결과현시，채용합괄적아온정화공예，가이사함린량교고적저온용기용강판재만족재료강도적전제하획득경호적인성，우기시능구획득경호적저온인성。통과분석아온정화처리후불동랭속하강판적조직성능，발현증대냉각속도가이진일보제고강판적성능。
Conventional normalization and subcritical normalization are conducted on hot rolled steel plate with low P content for low temperature pressure vessel. The microstructure is observed and mechanical properties of the steel plate are analyzed under different conditions. The results show that proper subcritical normalizing process enables steel plate with high P content for low temperature pressure vessel to receive higher toughness while attaining satisfactory ma-terial strength,esp. better low temperature toughness. By analyzing the microstructure and properties of steel plate cooled in different speeds after subcritical normalization,it is found out that increasing cooling rate can further improve the mechanical properties of steel plate.
