本文關(guān)鍵詞： LQCS 焊接接頭 SSCC 微觀組織 腐蝕產(chǎn)物　出處：《材料導(dǎo)報(bào)》2017年S1期 　論文類(lèi)型：期刊論文

【摘要】：經(jīng)過(guò)反復(fù)焊接工藝試驗(yàn),確定了合理的L360QCS微合金鋼焊接工藝參數(shù),針對(duì)L360QCS微合金鋼焊接接頭進(jìn)行了抗SSCC試驗(yàn)研究。結(jié)果表明,焊接接頭屈服強(qiáng)度為410 MPa,抗拉強(qiáng)度為528 MPa,平均沖擊功值為145J,彎曲試驗(yàn)、刻槽錘斷試驗(yàn)均未見(jiàn)缺陷,各類(lèi)力學(xué)性能指標(biāo)合格;根焊層、填充層、蓋面層平均硬度值分別為136.6HV、146.3HV、157.1HV;根焊層、填充層微觀組織晶粒細(xì)小,為等軸鐵素體+珠光體蓋,蓋面焊層組織晶粒較粗大,為粒狀貝氏體+珠光體+針狀鐵素體;焊接接頭SSCC試驗(yàn)未出現(xiàn)裂紋,經(jīng)XRD、SEM分析,腐蝕產(chǎn)物膜為呈堆砌狀態(tài)的四方晶系晶體FeS。L360QCS微合金鋼焊接接頭能夠滿足NACE TM0177-2005標(biāo)準(zhǔn)規(guī)定的抗SSCC性能要求。
[Abstract]:After repeated welding experiments, reasonable welding parameters of L360QCS microalloyed steel were determined, and the SSCC resistance of the welded joints of L360QCS microalloyed steel was studied. The yield strength of welded joint is 410 MPA, the tensile strength is 528 MPA, the average impact work value is 145J, no defects are found in bending test and groove hammer breaking test, and all kinds of mechanical properties are up to standard. The average hardness of the caprock is 136.6 HVN 146.3 HVN 157.1 HV.The microstructure of the filler layer is fine, which is an equiaxed ferrite pearlite cover, and the microstructure of the cover welding layer is coarse, which is granular bainitic pearlite acicular ferrite. There were no cracks in the SSCC test of welded joints, and the corrosion product film was a stacked tetragonal crystal FeS.L360QCS microalloyed steel welded joint, which could meet the requirement of SSCC resistance stipulated by NACE TM0177-2005 standard.
【作者單位】： 西南石油大學(xué)應(yīng)用技術(shù)學(xué)院;四川建筑職業(yè)技術(shù)學(xué)院材料工程系;
【基金】：西南石油大學(xué)自然科學(xué)基金(2012XJZ039) 南充市科技支撐項(xiàng)目(NC2015C045)
【分類(lèi)號(hào)】：TG407

【相似文獻(xiàn)】

中國(guó)期刊全文數(shù)據(jù)庫(kù) 前6條

1 ;A NEW INTELLIGENT AMPEROMETRIC TYPE OF ELECTROCHEMICAL HYDROGEN PROBE[J];Acta Metallurgica Sinica(English Letters);1999年02期

2 ;Relationship between the Brittlement Susceptibility and H Permeation Current for UNS G11180 Steel in 5% NaCl Solution with H_2S[J];Journal of Materials Science & Technology;1998年06期

3 章傳國(guó);楊建強(qiáng);鄭磊;謝仕強(qiáng);;特殊加載條件下X65管線管焊縫SSCC的試驗(yàn)[J];鋼鐵;2014年03期

4 米秋占,何雅娟;X60鋼環(huán)焊接頭抗SSCC性能研究[J];焊管;2004年06期

5 張旺峰,季根順,黃淑菊;帶狀組織對(duì)SSCC和CO2腐蝕的影響[J];甘肅工業(yè)大學(xué)學(xué)報(bào);1998年04期

6 胡洋;李曉剛;李明;薛光亭;;16Mn(HIC)鋼在D405設(shè)備環(huán)境下的腐蝕行為研究[J];石油化工腐蝕與防護(hù);2006年01期

中國(guó)碩士學(xué)位論文全文數(shù)據(jù)庫(kù) 前2條

1 李杰祥;基于鎳基焊材與碳鋼焊材的X65管線鋼焊接接頭SSCC性能研究[D];天津理工大學(xué);2016年

2 蔡志安;20鋼形變誘導(dǎo)鐵素體組織在替代飽和H_2S溶液中抗SSCC研究[D];西南石油大學(xué);2013年

，

本文編號(hào)：1524952