_高温大变形_超快冷_工艺对x70管线钢组织性能的影响

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1、_高温大变形_超快冷_工艺对X70管线钢组织性能的影响绗?3鍗风3鏈?011骞?鏈堫€€顎€顎€顎€顎€顎€顎€顎€顎€顎€顎€顎€顎€閽㈤搧鐮旂┒瀛︽姤顎€顎€顎€JournalofIronandSteelResearchVol.23,No.3March顎€2011鍩洪噾椤圭洰:鍥藉鑷劧绉戝鍩洪噾璧勫姪椤圭洰(50504007)浣滆€呯畝浠?鑲栧疂浜?1979顎?,鐢?鍗氬＋鐢?顎€顎€E顎€mail:xbl_1121@163.com;顎€顎€鏀剁鏃ユ湡:2009顎€12顎€17楂樻俯澶у彉褰?瓒呭揩鍐?宸ヨ壓瀵筙70绠＄嚎閽㈢粍缁囨€ц兘鐨勫奖鍝嶈倴瀹濅寒1,

2、顎€璁镐簯娉?,顎€鏉庢櫤鏉?,顎€寮犵鐢?,顎€鐜嬪浗鏍?(1.棣栭挗鎶€鏈爺绌堕櫌,鍖椾含100043;顎€2.涓滃寳澶у杞у埗鎶€鏈強杩炶涧鑷姩鍖栧浗瀹堕噸鐐瑰疄楠屽,杈藉畞娌堥槼110004;3.鏂扮枂鍏竴閽㈤搧鑲′唤鏈夐檺鍏徃,鏂扮枂涔岄瞾鏈ㄩ綈830022;顎€4.娌堥槼閾搁敾宸ヤ笟鏈夐檺鍏徃,杈藉畞娌堥槼110142)鎽橆€€瑕?瀵规瘮楂樻俯澶у彉褰?瓒呭揩鍐?宸ヨ壓鍜屼紶缁烼MCP宸ヨ壓,鐮旂┒浜?0鈭€/s瓒呭揩鍐锋潯浠朵笅鐨刋70绠＄嚎閽㈡樉寰粍缁囨紨鍙樿寰嬨€佺浉鍙樺姩鍔涘鍜屽己闊у寲鏈哄埗銆傜粨鏋滆〃鏄?楂樻俯澶у彉褰㈠悗杩涜

3、瓒呭揩鍐蜂娇鏅剁矑缁嗗寲,璇曢獙閽綅閿欏瘑搴︽彁楂?鏋愬嚭鐗╁讥鏁ｇ粏灏?鏀瑰杽浜嗚瘯楠岄挗鐨勭患鍚堟€ц兘銆傚彟澶?闅忕潃缁堝喎娓╁害鐨勯檷浣?闊ц剢杞彉娓╁害鍏堥檷鍚庡崌,杩囬珮缁堝喎娓╁害鐢熸垚鐨勯€€鍖栫彔鍏変綋鍜岃繃浣庣粓鍐锋俯搴︾敓鎴愮殑纰冲寲鐗╅兘寮卞寲浜嗘潗鏂欑殑闊ф€?鏈€缁堢殑浼樺寲宸ヨ壓鍙傛暟涓?缁堣涧娓╁害930鈭€,缁堝喎娓╁害600鈭€,杞у悗瓒呭揩閫熷喎鍗撮€熷害80鈭€/s銆傚叧閿瘝:缁堝喎娓╁害;缁嗘櫠寮哄寲;鏋愬嚭寮哄寲;瓒呭揩閫熷喎鍗?绠＄嚎閽㈡枃鐚爣蹇楃爜:A顎€顎€鏂囩珷缂栧彿:1001顎€0963(2011)03顎€00

4、39顎€05EffectsofHighTemperatureLargeDeformationandUltraFastCoolingProcessonMicrostructureandMechanicalPropertiesofX70PipelineSteelXIAOBao顎€liang1,顎€XUYun顎€bo2,顎€LIZhi顎€jie3,顎€ZHANGFu顎€sheng4,顎€WANGGuo顎€dong2(1.ShougangResearchInstituteofTechnology,Beijing100043,China;顎€2.TheStateKeyLaborato

5、ryofRollingandAutomation,NortheasternUniversity,Shenyang110004,Liaoning,China;顎€3.XinjiangBayiIronandSteelCoLtd,Wulumuqi830022,Xinjiang,China;顎€4.ShenyangCastingandForgingIndustrialCoLtd,Shenyang110142,Liaoning,China)Abstract:Themicrostructuralevolution,phasetransformationkineticsandstreng

6、theningandtougheningmecha顎€nismofX70pipelinesteelrolledbyprocessofhightemperaturelargedeformationandultrafastcoolingwerein顎€vestigatedincomparisonwithtraditionalTMCPprocess.Itisshowedthatcomprehensivemechanicalpropertiesofthetestedsteelareimprovedbymeansofrefininggrain,increasingdislocatio

7、ndensityandrefiningprecipitationintheprocessofhightemperaturelargedeformationandultrafastcooling.Inaddition,ductile顎€brittletransitiontem顎€peraturefirstlydecreasesandthenincreaseswithdecreasingoffinishcoolingtemperature.Degeneratedpearlitere顎€sultingfromhigher