TMCP工藝對(duì)高韌性X90管線(xiàn)鋼組織性能的影響
發(fā)布時(shí)間:2018-05-30 02:01
本文選題:金屬材料 + 管線(xiàn)鋼 ; 參考:《材料研究學(xué)報(bào)》2015年12期
【摘要】:對(duì)高韌性X90管線(xiàn)鋼進(jìn)行實(shí)驗(yàn)室模擬軋制,研究了TMCP的工藝參數(shù)加熱溫度、中間坯厚度和卷取溫度對(duì)其綜合力學(xué)性能和微觀組織特征的影響。結(jié)果表明:隨著加熱溫度的提高強(qiáng)度先呈現(xiàn)上升趨勢(shì),當(dāng)加熱溫度達(dá)到1250℃左右時(shí)晶粒粗化嚴(yán)重,強(qiáng)度顯著下降;中間坯厚度的增加有利于組織細(xì)化與均勻化,從而提高鋼板強(qiáng)度與韌性;卷取溫度對(duì)性能的影響最為顯著,在320℃左右卷取時(shí)可得到粒狀貝氏體+板條貝氏體組織,強(qiáng)韌性匹配達(dá)到最佳效果。結(jié)合實(shí)驗(yàn)室模擬參數(shù)進(jìn)行了X90的工業(yè)試制,鋼卷在得到足夠強(qiáng)度的同時(shí)具有優(yōu)異的低溫韌性。本文研究的TMCP工藝具有良好的實(shí)踐效果。
[Abstract]:The effects of heating temperature, thickness of intermediate billet and coiling temperature of TMCP on the comprehensive mechanical properties and microstructure of high toughness X90 pipeline steel were studied. The results show that with the increase of heating temperature, the grain coarsening becomes more serious and the strength decreases significantly when the heating temperature reaches 1250 鈩,
本文編號(hào):1953405
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