執(zhí)行器IC20-60W3T芯科技，芯創(chuàng)新；74336160
北京科技大學(xué)的學(xué)者建立規(guī)則溶液亞點(diǎn)陣模型計(jì)算了不同溫度(1073～1523K)下低碳Nb-Ti二元微合金鋼(Nb質(zhì)量分?jǐn)?shù)為0.023%，Ti質(zhì)量分?jǐn)?shù)為0.012%)中碳氮化物析出相的平衡摩爾分?jǐn)?shù)、化學(xué)驅(qū)動(dòng)力和各組元摩爾分?jǐn)?shù)，對(duì)微合金鋼中析出粒子演變規(guī)律進(jìn)行研究，并利用透射電鏡觀察及能譜分析驗(yàn)證這種析出模式。計(jì)算結(jié)果表明，1523K下析出粒子化學(xué)式組成為(Nb0.15Ti0.85)(C0.16N0.84)，由富Ti的析出物逐漸過渡至Nb-Ti均勻析出，析出粒子演變順序?yàn)?Nb0.15Ti0.85)(C0.16N0.84)、(NbxTi1-x)(CyN1-y)和(Nb0.5Ti0.5)(C0.56N0.44)，與實(shí)驗(yàn)結(jié)果符合較好。
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SPCE——表示深沖用冷軋?zhí)妓劁摫“寮颁搸?，相?dāng)于8Al（5213）深沖鋼。需保證非時(shí)效性時(shí)，在牌號(hào)末尾加N為SPCEN。冷軋?zhí)妓劁摫“寮颁搸д{(diào)質(zhì)代號(hào)：退火狀態(tài)為A，標(biāo)準(zhǔn)調(diào)質(zhì)為S，1/8硬為8，1/4硬為4，1/2硬為2，硬為1。表面加工代號(hào)：無光澤精軋為D，光亮精軋為B。如SPCC-SD表示標(biāo)準(zhǔn)調(diào)質(zhì)、無光澤精軋的一般用冷軋?zhí)妓乇“?。再如SPCCT-SB表示標(biāo)準(zhǔn)調(diào)質(zhì)、光亮加工，要求保證機(jī)械性能的冷軋?zhí)妓乇“濉６圈裧/cm3密度就是某種物質(zhì)單位體積的質(zhì)量2熱性比熔點(diǎn)℃金屬材料固態(tài)轉(zhuǎn)變?yōu)橐簯B(tài)時(shí)的熔化溫度比熱容cJ/(kgK)單位質(zhì)量的某種物質(zhì)，在溫度升高1℃時(shí)吸收的熱量或溫度降低1℃時(shí)所放出的熱量熱導(dǎo)率λW/(mK)在單位時(shí)間內(nèi)，當(dāng)沿著熱流方向的單位長度上溫度降低1℃時(shí)，單位面積容許導(dǎo)過的熱量熱脹系數(shù)αL1-6/K金屬溫度每升高1℃所增加的長度與原來長度的比值3電性能。序號(hào)名稱量的符號(hào)單位符號(hào)含義1密度ρg/cm3密度就是某種物質(zhì)單位體積的質(zhì)量2熱性比熔點(diǎn)℃金屬材料固態(tài)轉(zhuǎn)變?yōu)橐簯B(tài)時(shí)的熔化溫度比熱容cJ/(kgK）單位質(zhì)量的某種物質(zhì)，在溫度升高1℃時(shí)吸收的熱量或溫度降低1℃時(shí)所放出的熱量熱導(dǎo)率λW/（mK）在單位時(shí)間內(nèi)，當(dāng)沿著熱流方向的單位長度上溫度降低1℃時(shí)，單位面積容許導(dǎo)過的熱量熱脹系數(shù)αL1-6/K金屬溫度每升高1℃所增加的長度與原來長度的比值3電性能電阻率ρΩm是表示物體導(dǎo)電性能的一個(gè)參數(shù)。
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