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tc4鈦及鎳基合金-鈦合金系列
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.index-module_taskLogo__71Tj5{height:66px;position:absolute;right:30px;top:0;width:66px}.index-module_drawerHand__aRhcO.index-module_open__qMl5O{right:480px}.index-module_reverse__OKr6k{transform:rotate(180deg)}網(wǎng)頁(yè)新聞貼吧知道網(wǎng)盤(pán)圖片視頻地圖文庫(kù)資訊采購(gòu)百科百度首頁(yè)登錄注冊(cè)進(jìn)入詞條全站搜索幫助首頁(yè)秒懂百科特色百科知識(shí)專題加入百科百科團(tuán)隊(duì)權(quán)威合作個(gè)人中心TC4播報(bào)討論上傳視頻鈦合金TC4材料收藏查看我的收藏0有用+10鈦合金TC4材料的組成為T(mén)i-6Al-4V，屬于(α+β)型鈦合金，具有良好的綜合力學(xué)機(jī)械性能。比強(qiáng)度大。TC4的強(qiáng)度sb=1.012GPa，密度g=4.51g/cm3，比強(qiáng)度sb/g=23.5，而合金鋼的比強(qiáng)度sb/g小于18。 鈦合金熱導(dǎo)率低。 鈦合金的熱導(dǎo)率為鐵的1/5、鋁的1/10，TC4的熱導(dǎo)率l=7.955W/m·K。中文名TC4組 成Ti-6Al-4V強(qiáng) 度1.012GPa比 熱0.612j/g·℃熱導(dǎo)率7.955W/m·K密 度4.51g/cm3HRCHRC30左右目錄1材料簡(jiǎn)介2試件制備3離子注入條件4硬度測(cè)量材料簡(jiǎn)介播報(bào)編輯線膨脹系數(shù)=8.6*10-6℃（0-100℃），比熱=0.612j/g·℃。鈦合金的彈性模量較低。TC4的彈性模量E=110GPa，約為鋼的1/2，故鈦合金加工時(shí)容易產(chǎn)生變形。其泊松比為0.34。 TC4(Ti-6Al-4V)和TA7(Ti-5Al-2.5Sn)鈦合金，采用兩種注入方案進(jìn)行表面改性，試驗(yàn)表明，鈦合金經(jīng)離子注入后，提高了顯微硬度，顯著地降低了滑動(dòng)摩擦系數(shù)，有效地提高了耐磨性.為探明其改性機(jī)理，對(duì)注入與未注入樣品進(jìn)行了X射線光電子能譜(XPS)分析，獲得滿意的結(jié)果.試件制備播報(bào)編輯選航空用的TC4、TA7鈦合金，試件制成圓盤(pán)狀，尺寸為40*5mm，所有試件表面均拋光至鏡面.離子注入條件播報(bào)編輯兩種鈦合金都分別采用兩種注入方案：① 在TC4及TA7鈦合金試件上濺射鍍Ti，Ti膜總厚度為540nm(5400A).在鍍Ti膜過(guò)程中，同時(shí)用(N+ +N+2)進(jìn)行動(dòng)態(tài)反沖注入，束流能量為50keV，束流密度為45μA/cm2，劑量為7*1017/cm2，靶室真空度為1.33*10-2Pa；② 在①的基礎(chǔ)上，再注入C+，束流能量為40keV，劑量為3*1017/cm2.硬度測(cè)量播報(bào)編輯用HXD-1000數(shù)字式顯微硬度計(jì)測(cè)量了注入與未注入試件的顯微硬度，測(cè)量載荷為4.9×10-2N，測(cè)量結(jié)果列于表1.表1 顯微硬度測(cè)量結(jié)果材料 表面狀態(tài) 顯微硬度/MPa 硬度提高倍數(shù)未注入 2690 0TC4 注入(N+ +N+2) 6399 1.38注入(N+ +N+2)+C+ 3436 0.28未注入 3133 0TA7 注入(N+ +N+2) 4276 0.36注入(N+ +N+2)+C+ 4073 0.30從表1看出，離子注入后，試件的顯微硬度都有不同程度的提高，其中TC4鈦合金注入(N+ +N+2)混合束后硬度約提高1.4倍. [1]●TC4 熱膨脹系數(shù)：TC4鈦合金具有優(yōu)良的耐蝕性、小的密度、高的比強(qiáng)度及較好的韌性和焊接性等一系列優(yōu)點(diǎn)，在航空航天、石油化工、造船、汽車，醫(yī)藥等部門(mén)都得到成功的應(yīng)用。●TC4鈦合金力學(xué)性能：抗拉強(qiáng)度σb/MPa≥895,規(guī)定殘余伸長(zhǎng)應(yīng)力σr0.2/MPa≥825,伸長(zhǎng)率δ5(%)≥10,斷面收縮率ψ(%)≥25●TC4鈦合金密度:4.5（g/cm3）工作溫度-100～550（℃）●TC4鈦合金化學(xué)成分:TC4含鈦(Ti) 余量,鐵(Fe)≤0.30,碳(C)≤0.10,氮(N)≤0.05,氫(H)≤0.015,氧(O)≤0.20,鋁(Al)5.5～6.75,釩(V)3.5～4.5新手上路成長(zhǎng)任務(wù)編輯入門(mén)編輯規(guī)則本人編輯我有疑問(wèn)內(nèi)容質(zhì)疑在線客服官方貼吧意見(jiàn)反饋投訴建議舉報(bào)不良信息未通過(guò)詞條申訴投訴侵權(quán)信息封禁查詢與解封?2024?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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說(shuō)明： 鈦合金TC4材料的組成為T(mén)i-6Al-4V，屬于(α+β)型鈦合金，具有良好的綜合力學(xué)機(jī)械性能。比強(qiáng)度大。TC4的強(qiáng)度sb=1.012GPa，密度g=4.4*103，比強(qiáng)度sb/g=23.5，而合金鋼的比強(qiáng)度sb/g小于18。 鈦合金熱導(dǎo)率低。 鈦合金的熱導(dǎo)率為鐵的1/5、鋁的1/10，TC4的熱導(dǎo)率l=7.955W/m·K。硬度測(cè)量?：用HXD-1000數(shù)字式顯微硬度計(jì)測(cè)量了注入與未注入試件的顯微硬度，測(cè)量載荷為4.9×10-2N，測(cè)量結(jié)果列于表1.表1 顯微硬度測(cè)量結(jié)果材料 表面狀態(tài) 顯微硬度/MPa 硬度提高倍數(shù)未注入 2690 0TC4 注入(N+ +N+2) 6399 1.38注入(N+ +N+2)+C+ 3436 0.28未注入 3133 0TA7 注入(N+ +N+2) 4276 0.36注入(N+ +N+2)+C+ 4073 0.30從表1看出，離子注入后，試件的顯微硬度都有不同程度的提高，其中TC4鈦合金注入(N+ +N+2)混合束后硬度約提高1.4倍●TC4 熱膨脹系數(shù)：TC4鈦合金具有優(yōu)良的耐蝕性、小的密度、高的比強(qiáng)度及較好的韌性和焊接性等一系列優(yōu)點(diǎn)，在航空航天、石油化工、造船、汽車，醫(yī)藥等部門(mén)都得到成功的應(yīng)用?！馮C4鈦合金力學(xué)性能：抗拉強(qiáng)度σb/MPa≥895,規(guī)定殘余伸長(zhǎng)應(yīng)力σr0.2/MPa≥825,伸長(zhǎng)率δ5(%)≥10,斷面收縮率ψ(%)≥25●TC4鈦合金密度:4.5（g/cm3）工作溫度-100～550（℃）●TC4鈦合金化學(xué)成分:TC4含鈦(Ti) 余量,鐵(Fe)≤0.30,碳(C)≤0.10,氮(N)≤0.05,氫(H)≤0.015,氧(O)≤0.20,鋁(Al)5.5～6.8,釩(V)3.5～4.5。
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