45CRNIMOV合金圓鋼-合金結(jié)構(gòu)鋼
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[1-2]。其化學(xué)成分包含C、Si、Mn、S、P、Cr、Ni、V、Mo等元素,經(jīng)860℃油淬和460℃回火處理后,金相組織為回火屈氏體,抗拉強(qiáng)度達(dá)1553MPa,屈服強(qiáng)度1374MPa。該材料廣泛應(yīng)用于航空器起落架、火箭發(fā)動(dòng)機(jī)殼體、軸、齒輪、軸承、沖模、墊塊等關(guān)鍵部件 [1-2]。截至2025年,其圓棒產(chǎn)品以現(xiàn)貨形式供應(yīng),支持定制加工 [3]。材料類型低合金超高強(qiáng)度鋼 [1]執(zhí)行標(biāo)準(zhǔn)國(guó)標(biāo) [3]抗拉強(qiáng)度1553MPa [1]工藝研究2016年兩相區(qū)軋制及退火處理工藝研究 [2]供應(yīng)狀態(tài)正火或退火態(tài) [1]應(yīng)用領(lǐng)域航空航天、模具制造 [1-2]目錄1材料特性2應(yīng)用領(lǐng)域3工藝與性能研究4商品供應(yīng)5現(xiàn)貨規(guī)格材料特性播報(bào)編輯屬低合金超高強(qiáng)度鋼,其化學(xué)成分包括C、Si、Mn、S、P、Cr、Ni、V、Mo等元素,具有高屈強(qiáng)比、強(qiáng)度高、韌性好及高溫強(qiáng)度優(yōu)異等特點(diǎn),但可焊性較差。經(jīng)860℃油淬和460℃回火2h油冷處理后,金相組織為回火屈氏體,力學(xué)性能表現(xiàn)為抗拉強(qiáng)度1553MPa,屈服強(qiáng)度1374MPa,伸長(zhǎng)率14%,斷面收縮率46%,沖擊韌性值51J/cm2 [1]。應(yīng)用領(lǐng)域播報(bào)編輯該材料廣泛用于航空器的要害結(jié)構(gòu),如起落架、固體燃料火箭發(fā)動(dòng)機(jī)殼體、飛機(jī)大梁、齒輪及沖模等 [1]。在航天領(lǐng)域,(D6A鋼)還被用于制造中小型火箭殼體及飛機(jī)發(fā)動(dòng)機(jī)曲軸等關(guān)鍵部件 [2]。工藝與性能研究播報(bào)編輯2016年,東北大學(xué)對(duì)D6A鋼(即)進(jìn)行了兩相區(qū)軋制及退火處理研究。實(shí)驗(yàn)表明,退火溫度在550℃至650℃時(shí),鐵素體晶粒尺寸先減小后增大,550℃時(shí)達(dá)到最小400nm;滲碳體尺寸由70nm增至140nm,質(zhì)量分?jǐn)?shù)由9.6%降至3.6%。隨著退火溫度升高,{110}與{112}織構(gòu)增強(qiáng),硬度由472HV降至423HV。超細(xì)晶D6A鋼的強(qiáng)化機(jī)制主要源于細(xì)晶強(qiáng)化、析出強(qiáng)化及織構(gòu)強(qiáng)化 [2]。商品供應(yīng)播報(bào)編輯截至2025年,圓鋼作為低合金超高強(qiáng)度鋼產(chǎn)品,規(guī)格涵蓋100mm圓棒,按國(guó)標(biāo)標(biāo)準(zhǔn)生產(chǎn),質(zhì)量等級(jí)為一級(jí),支持加工定制 [3]。現(xiàn)貨規(guī)格播報(bào)編輯產(chǎn)品名稱規(guī)格/mm材質(zhì)冷拉光圓Ф3.0-100熱軋圓鋼Ф20-100熱軋圓鋼Ф200-400特性及適用范圍應(yīng)在正火或退火態(tài)加工,淬火回火后使用??勺骱娇掌鞯囊Y(jié)構(gòu),如起落架、固體燃料火箭發(fā)動(dòng)機(jī)殼體、軸、齒輪、軸承、沖模、墊塊等。力學(xué)性能抗拉強(qiáng)度 σb (MPa):1553圓鋼屈服強(qiáng)度 σ0.2 (MPa):1374伸長(zhǎng)率 δ5 (%):14斷面收縮率 ψ (%):46沖擊韌性值 αku (J/cm2):51試樣尺寸:某試樣熱處理規(guī)范及金相組織熱處理規(guī)范:860℃油淬,回火460℃,2h,油冷。金相組織:回火屈氏體。新手上路成長(zhǎng)任務(wù)編輯入門編輯規(guī)則本人編輯我有疑問內(nèi)容質(zhì)疑在線客服官方貼吧意見反饋投訴建議舉報(bào)不良信息未通過詞條申訴投訴侵權(quán)信息封禁查詢與解封?2025?Baidu?使用百度前必讀?|?百科協(xié)議?|?隱私政策?|?百度百科合作平臺(tái)?|?京ICP證030173號(hào)?京公網(wǎng)安備11000002000001號(hào)window.PAGE_DATA= 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1.30~1.80V 0.10~0.20Mo 0.20~0.30特性及適用范圍應(yīng)在正火或退火態(tài)加工,淬火回火后使用??勺骱娇掌鞯囊Y(jié)構(gòu),如起落架、固體燃料火箭發(fā)動(dòng)機(jī)殼體、軸、齒輪、軸承、沖模、墊塊等。折疊力學(xué)性能抗拉強(qiáng)度 σb (MPa):1553屈服強(qiáng)度 σ0.2 (MPa):137445CrNiMoV圓鋼45CrNiMoV圓鋼伸長(zhǎng)率 δ5 (%):14斷面收縮率 ψ (%):46沖擊韌性值 αku (J/cm2):51試樣尺寸:某試樣折疊熱處理規(guī)范及金相組織熱處理規(guī)范:860℃油淬,回火460℃,2h,油冷。金相組織:回火屈氏體。參考資料: