冷热作模具钢力学性能

拉伸试验温度/℃2020040060070075080085090010001100120012501300回火温度/℃50100150200250300350400450500回火温度/℃050100150200250300350400淬火温度/℃σ0.2/MPa45633033517685736746422415676 硬度HRC6261.560.559.5585552488057226352071001028767523020119.7726.221.93251.55859.370.65139.72241.58756.546.5σbδ(%)54.247.763.476.877.268.462.548.330.226.75310010087Ψ压缩σbc/MPa3610266018301900223①265①230①265①9SiCr拉伸强度σbMPa抗弯强度σbb9Mn2V17001720170020002500312527509CrWMn硬度HRC646466666260585655抗弯强度σbbMPa硬度HRCCrWMn60065070075080085090095010001050110011501200回火温度/℃050100150200250300350400450500淬火温度/℃750800850900回火温度/℃2800240018001730626567636262626161硬度HRC6463626160585655535148硬度HRC5865抗弯强度σbbMPa320026001500 σbMPaσsakJ∙cm-21013152025303650硬度HB600530500450400360330280Cr23003504004505005506006507001800160015001300120010007501100900800625淬火温度/℃8208408809009209607CrSiMnMoV回火温度/℃180200250300350400450500淬火温度/℃860880900920淬火温度/℃σbb/MPa338034103520356034803320σbb/MPa35603510320031103020286026702600HRC（空冷）6263.263.564.5测量性能σ0.2b/MPaak/J∙cm-28587941059889ak/J∙cm-2105102116118128139151163HRC（130℃热油冷）62.363.66464.5HRC47-4860-6162-6362-6363-6462-63HRC6262615957545250硝盐等温460.264.820031463.9531304.015502081292515.7275030009.5回火温度5802273291311.62450310011.48608Cr2MnWMoVS880σbb/MPafK/mmσ0.2b/MPaσbb/MPafK/mm淬火温度/℃回火温度/℃σ0.2c/MPaτb/MPaτ0.3/MPaφmax（°)淬火温度/℃78016026501920131066.318026182002572171013105822024122502386硬度HRC60σbbMPaakJ∙cm-270Cr2Mn2SiWMoV800820840860880900920940980回火温度/℃1002003004005006006162.56363.563.56362.56257.5硬度HRC62.5605855.55042250035003000503435454246σbbMPa2300315035003150akJ∙cm-244.536回火温度/℃（1120℃油淬）250300350400450500550600淬火温度/℃10001050110011501200125013006W6Mo5Cr4V回火温度/℃300350400σbbMPa3500400044004500450042501500σbbMPa330033503400冲击韧度akJ∙cm-2555075706970110128akJ∙cm-2220200160120804015akJ∙cm-2扰度fmm65.54.23.632.52.2挠度fmm333抗弯强度σbbMPa100017502500350032004000440040006Cr4W3Mo2VNb64450500550600650350037504700450057504555703.23.33.54.477Cr7Mo3V2Si淬火温度回火温度/℃/℃510530110055057059051053011505505705905105301180550570590电渣钢不同温度淬、回火的力学性能抗拉强度抗压屈服强度抗弯强度σb/MPaσ0.2bc/MPaσbb/MPa24002710469024802820552025802550543025002340499020804380146027203570236029204670268028655590268026605190234022304790126026002880152032302910277028105080261027004730247024904880电炉钢不同温度淬、回火的力学抗压屈服强度抗弯强度σ0.2bc/MPaσbb/MPa276052952670508024654735257048103020536028255065冲击韧度-2ak/J∙cm403525冲击韧度ak/J∙cm-240455055淬火温度回火温度/℃/℃53011005505705301150550570抗拉强度σb/MPa261125402407260027572618Cr4W2MoV淬火温度回火温度抗弯强度σbb/MPa/℃/℃2002590960℃淬油25026003002880淬火温度回火温度抗弯强度σbb/MPa/℃/℃20020002502200300240035023001020℃淬油1020℃淬油4004505005502200210024002850 硬度HRC54.146.7σbb/MPa400036003000250023001600回火温度/℃100150200250300350400450500550600650回火温度/℃100150200250300350400450500550600650回火温度/℃10062564243抗拉强度/MPa18491596屈服强度/MPa576 回火温度/℃Cr5Mo1V530593淬火温度/℃850900950100010501100淬火温度/℃σbb/MPaak/J∙cm-2950℃320032503300337534503500362537003375σbb/MPa859794908580738580ak/J∙cm-2淬火温度/℃Cr6WV1000℃312532003625350034003450360035503490σbb/MPa787774706562596270ak/J∙cm-2淬火温度/℃1050℃150200250300350400450500550600650σbb/MPa215021802200217021502050195018602750287031003050290029002950320035005859616570788480106Cr12回火温度/℃150200250300350400450500回火温度/℃1000℃油淬150200250300回火温度/℃100200300400500600淬火温度/℃750800850900950100010501100ak/J∙cm-201012152530145抗弯强度σbbMPa2600280031503450抗弯强度σbb400048004500440043005200Ψ(%)ak/J∙cm-27030274055657265挠度fmm2.83.53.84扭转冲击功1340706070冲击韧度akJ∙cm-211131111冲击韧度ak6366726752Cr12MoVCr12Mo1V1σb/MPaδ(%)4CrW2Si1250130013601500164088.599.51034353738404CrW2Si

回火温度/℃200300400500600回火温度/℃200300400500600回火温度/℃200300400500600淬火温度/℃780800825850T7回火温度/℃150175200225250275300淬火温度/℃760780800825850淬火温度/℃ak/J∙cm-2σb/MPa282000251800301680401470431200ak/J∙cm-2σb/MPa151980181880201700251480321200ak/J∙cm-2σb/MPa102150181950201800241600301400σbb/MPa挠度f/mm22003.520003.21750317002.6σbb/MPa挠度f/mm20003.521003.22500426254.52500522508212510σbb/MPa挠度f/mm12250221251.5175011250σbb/MPa硬度HRCσ0.2/MPaδ（%）Ψ（%）175074016701035150011381300134011001650σ0.2/MPaδ（%）Ψ（%）185051417506201600825130093010801035σ0.2/MPaδ（%）Ψ（%）198008190041016805151550820130010305CrW2Si6CrW2SiT10780800820840860T11回火温度/℃150175200225250275300淬火温度/℃780800825850T12回火温度/℃150175200225250275300淬火温度/℃2802932502306365.565.565.565.5σbb/MPa挠度f/mm硬度HRC17502.66317002.562.519003.56221003.86022004.220004.619005.2σbb/MPa挠度f/mm2250321252.617502.212501.4σbb/MPa挠度f/mm2200222501.92400326003.726503.82500424004.5回火温度/℃500520540560580600620500520540560580600620500σbb/MPa挠度f/mm35001.841002.142502.146002.546502.845002.942503.132001.540001.945002.249002.348502.447002.644002.831001.5116011801200W6Mo5Cr4v21220124012605205405605806006205005205405605806006205005205405605806006205005205405605806006203600400047504700460043002900330035004500470044504300250030003100350036004200400015001800185019002000210017001.61.622.12.22.21.31.51.31.81.91.9521.11.41.31.51.451.71.60.70.90.850.850.850.850.75W12Mo3Cr4V3N淬火温度/℃12001210122012301240125012601270淬火温度/℃1260℃淬火σbb/MPaak/J∙cm-2硬度HRC28004467.52750406827003668.526503368.82450266922002069.518001569.315501069回火温度/℃100200300400500600100扭转强度τb/MPa128014501440144015001090扭转角/（2.517.5201812.518.52.5－78℃冷处理1260℃淬火W18Cr4V1300℃淬火-78℃冷处理1300℃淬火200300400500600100200300400500600100200300400500600淬火温度/℃118011901200121012201230124012501180119012001210122012301240125014401440143014801500140015201520152015251530100012801290130013107.52020552.58201573W9(C,V较低）W9Mo3Cr4VW9(C,V较高）σbb/MPaak/J∙cm-247454340430039425044425040420032424147504047003845003543003542003637507Mn15Cr2Al3V2WMo不同温度固溶和时效后的力学性能σb/MPaδ(%)φ（%）ak/J∙cm-2热处理制度8206161.52301180℃固溶7206062.5240240137016.534481150℃固溶137015.535.545700℃ 2h时效13801835.545361165℃固溶39700℃ 2h时效1Cr18Ni9Ti1165℃固溶700℃ 2h时效401180℃固溶15104.58.515650℃ 20h时效14904.59.51313室温力学性能热处理σb/MPaσs/MPaδ（%）φ（%）1100-1150℃油或水淬≥550≥200≥40≥551100-1150℃水淬550~650200~35050~6060~701130-1160水淬800℃ 10h时效6553105575.5时效稳定性热处理制度时效温度时效时间σbσ0.2δ/℃/h/MPa（%）时效前655310555001000069530056.51150℃水冷5501000063531554800℃时效 10h20000635300546005000610335501000064031059.66501000062027046时效前67524569.5550300060127560.550001050℃，空冷600300062029561.55000650300061527557.55000高温力学性能热处理制度温度σbσbδ5φ/℃/MPa（%）203106555575.51002455104476.52002054653870棒材1130~1160℃，3002204502966水冷，再经800℃40022045526.56410h5002104303064.5或700℃ 20h时效55018045540.56160021036028.564.56501953553068.370021027529.557.52024457769.770.6Ф219mm×12mm管坯55014443637.366.2，1050~1100℃固溶6001833783162.5处理65013240834.665.5219mm×12mm管坯，1050~1100℃固溶

处理7001333862058.5常用热作模具钢

试验温度/℃300350400450500550600试验温度/℃400450500550600650700试验温度/℃300350400450500550600650700σb/MPa110010501000850730600450σ0.2/MPa90085073056031013040σ0.2/MPa1160110010601030980840700450240φ(%)50556272808285σb/MPa1040960830630380220130σb/MPa13201280122011601060950770500280ak/J∙cm-2δ（%）65115711.549124014.53317.535223726φ(%)76.58085899496.598φ(%)565860646872748296δ（%）202430385478134δ5（%）1615.516171818.52331335CrMnMo5CrNiMo4CrMnSiMoV5Cr2NiMoVSi钢号及冶炼方法5Cr2NiMoVSi电炉5Cr2NiMoVSi真空5Cr2NiMo电炉冶炼试验温度/℃100200300400500600淬火温度/℃9851000860σ0.2/MPa145014001320120010006605Cr2NiMoVSi等高温力学性能回火温度/℃硬度HRC6803767536.351039.54Cr5MoSiVσb/MPaΨ（%）δ5（%）ak/J∙cm-2165051.211.5601600521263156052.8136514605814.865.5130065.517.56565700试验温度/℃100200300400500600700试验温度/℃200250300350400450500550600试验温度/℃200250300350400450500热处理条件σ0.2/MPa1460145013601200950260σ0.2/MPa150014001320139013801300122011301100σ0.2/MPa112011001085100095080068076σb/MPaΨ（%）δ5（%）ak/J∙cm-217605713.56017205913701650601275154062.51380140066179010507718.5100320σb/MPaΨ（%）δ（%）ak/J∙cm-2187045748175045.57551640467601600487.561.51540508621470518.561.51400529611300519.560.51200501060σb/MPaΨ（%）δ（%）ak/J∙cm-2130028845127028.68.5501260301055120040135011304816481000551846.5850652144σb/MPaΨ（%）硬度HRC1400474513704945.513204744128048421200504011004937700σb/MPaΨ（%）硬度HBS1500333481520323351400253301300183251200173154Cr5MoSiV14Cr5W2VSi8Cr31100℃淬火，550℃回火试验温度/℃100200300400500600700试验温度/℃4004505005506003Cr2W8V热处理条件1100℃淬火，600℃回火回火

650700回火温度/℃300350400450500550600热处理方式108060016202802003Cr3Mo3W2Vσb/MPaΨ（%）δ（%）ak/J∙cm-2183534642183234.5639183034.86.5361800356.8351760367321700377.2331600707.540试验温度/℃300400500600700300400500600700试验温度/℃450550650450550650450550650450550650σb/MPa154015001060室温硬度13001065800温度4.575σbσ0.2σb/MPaΨ（%）δ5（%）180030191730292015303021110044254007535200018001400500σb/MPa18202434δ5（%）1080℃油淬5Cr4Mo2W2VSi1120℃油淬304068σa/MPa5Cr4Mo3SiMnVAl热处理工艺1090℃油淬，580℃加热，保温2h，回火1090℃油淬，620℃加热，保温2h，回火1120℃油淬，580℃加热，保温2h，回火1120℃油淬，620℃加热，保温2h，回火试验温度/℃145012658.81200112012.4640~840520~73020.5~29.511309857.688080512.8~21.254045531.2155014158130012008.8~18.689582814.811109008.49608901380058022δ10（%）15.525δ5φak/J∙cm-222.525.923.6φ5Cr4W5Mo2V550600650热处理工艺热处理工艺1120℃油淬，560℃2h×2次回火HRC59~616Cr4Mo3Ni2WV1120℃油淬，630℃2h×2次回火51~53/℃550600650700550600650700（%）/MPa1660~18403.5~4.58~8.514501080~1140550~69013.541.51400~15605~810~151150~13501134900~11209.5~1222~32660~7209~1030~32Mk/N∙m15514114464271211.57.54扭转φ（ °）4353963321990227033002250935139017.76.96.632.939.557.439.216.324.2冲击韧度aK硬度HBS/J∙cm-2409010090150370360320280222158106772432182131725344.629.333.622.7197.44.2扭转冲击功 J60621001951107895120冲击韧度aKJ∙cm-23550423537475680δφ(%)99101433354048等温40min60.264.8σ0.2c271426562556τb169017101710φmax（°)51.55853.7火温度/℃6002485277511.92223285113.86202037257314.52174290015.588050019816301929247513.3300230255018601270109073.3580180012301040806001500119010201066201522105088014363013406501056抗压强度σk1cMPa25002380237823752380250027002375能

挠度f/mm6.78.916.516.516.53.74.712.78.39.84.63.65.76.57.1的力学性能挠度f/mm8.51313.26.612.712.6冲击韧度ak/J∙cm-233751161044844981048229734847冲击韧度ak/J∙cm-272.5122.5104449470K1c/MPa m1/2198.1208.8219.4伸长率（%）标距为50.8mm5断面收缩率（%）13.9硬度HRC62.56057.5565554.55452.55150.55048硬度HRC636260585756.556565656.55654硬度HRC62.56059575756.55757.55857.55857.8硬度HRC6059.55756转冲击功/J1340706070HRC5451494036HRC5553504435HRC6055504541角/（°）2.517.5201812.518.52.5挠度f/mm0.130.170.180.160.140.157.52020552.582015730.120.140.150.130.10.13ak/J∙cm-2>200250φ（%）75.57068717367.57279.571.570.570ak/J∙cm-2250190245295240295170285175200190205185200ak/J∙cm-2250370317365365360340280288303292320学性能试验温度/℃550550550硬度HRC5049474441.531σb/MPaΨ（%）ak/J∙cm-2596835063585703868233硬度HV530500475450400300130ak/J∙cm40.5405540842423253568-2硬度HV480450400300150650620550450200Ψ（%）4359.664.5376280.936.84359.5344369硬度akHV44735221097.6401~429279~317187~230101~103/J∙cm-22524247119202575