DD499 ?相近牌號：SRR99（英）

概述：DD499是鎳基沉淀硬化型單晶高溫合金，屬于第一代單晶高溫合金。合金的成分簡單、密度較低，具有高的蠕變強度和抗疲勞性能、良好的單晶鑄造性能、較寬的固溶處理溫度范圍，并具有良好的組織穩(wěn)定性和涂層性能。該合金不含稀缺貴重元素、成本較低，因此價格較便宜。適合于制作1050℃以下具有復(fù)雜內(nèi)腔的燃氣渦輪工作葉片及1100℃以下工作的導(dǎo)向葉片。

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應(yīng)用概況及特性：合金已用于制作航空發(fā)動機燃氣渦輪轉(zhuǎn)子葉片和導(dǎo)向葉片。與該合金相近的SRR99合金在國外已成功應(yīng)用于斯貝等發(fā)動機。

合金經(jīng)900℃—1100℃長期時效過程中沒有TCP相析出。單晶葉片在1050℃溫度使用時，要采用粉末或抵壓滲鋁工藝，在葉片表面形成鋁化物或鋁-硅涂層。

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化學(xué)成分

中國高溫合金號:

GH1015 GH1016 GH1035 GH1040 GH1131 GH1139 GH1140 GH2035A GH2036 GH2038 GH2130 GH2132 GH15 GH16 GH35 GH40 GH131 GH139 GH140 GH35A GH36 GH38A GH130 GH132 GH2135 GH2150 GH2302 GH2696 GH2706 GH2747 GH2761 GH2901 GH2903 GH2907 GH2909 GH2984 GH3007 GH3030 GH3039 GH3044 GH3128 GH3170 GH3536 GH3600 GH135 GH150 GH302 GH696 GH706 GH747 GH761 GH901 GH903 GH907 GH909 GH984 GH5K GH30 GH44 GH128 GH170 GH536 GH600 GH3625 GH3652 GH4033 GH4037 GH4049 GH4080A GH4090 GH4093 GH4098 GH4099 GH4105 GH4133 GH4133B GH4141 GH4145 GH4163 GH4169 GH4199 GH4202 GH4220 GH625 GH652 GH33 GH37 GH49 GH80A GH90 GH93 GH98 GH99 GH105 GH33A GH4133B GH141 GH145 GH163 GH169 GH199 GH202 GH220 GH4413 GH4500 GH4586 GH4648 GH4698 GH4708 GH4710 GH4738 GH4742 GH5188 GH5605 GH5941 GH6159 GH6783 GH413 GH500 GH586 GH648 GH698 GH708 GH710 GH738 GH684 GH742 GH188 GH605 GH941 GH159 GH783 K211 K213 K214 K401 K402 K403 K405 K406 K406C K407 K408 K409 K412 K417 K417G K417L K418 K418B K419 K419H K11 K13 K14 K1 K2 K3 K5 K6 K6C K7 K8 K9 K12 K17 K17G K17L K18 K18B K19 K19H K423 K423A K424 K430 K438 K438G K441 K461 K477 K480 K491 K4002 K4130 K4163 K4169 K4202 K4242 K4536 K4537 K4648 K4708 K23 K23A K26 K430 K38 K38G K41 K461 K77 K80 K91 K002 K130 K163 K4169 K202 K242 K536 K537 K648 K708 K605 K610 K612 K640 K640M K6188 K825 K605 K10 K612 K40 K40M K188 K25 DZ404 DZ405 DZ417G DZ422 DZ422B DZ438G DZ4002 DZ4125 DZ4125L DZ640M DZ4 DZ5 DZ17G DZ22 DZ22B DZ38G DZ002 DZ125 DZ125L DZ40M DD402 DD403 DD404 DD406 DD408 DD3 DD4 DD6 DD8 HGH1035 HGH1040 HGH1068 HGH1131 HGH1139 HGH1140 HGH2036 HGH2038 HGH2042 HGH35 HGH40 HGH68 HGH131 HGH139 HGH140 HGH36 HGH38 HGH42 HGH2132 HGH2135 HGH2150 HGH3030 HGH3039 HGH3041 HGH3044 HGH3113 HGH3128 HGH3367 HGH3533 HGH3536 HGH3600 HGH4033 HGH4145 HGH4169 HGH4356 HGH4642 HGH4648 HGH132 HGH135 HGH150 HGH30 HGH39 HGH41 HGH44 HGH113 HGH128 HGH367 HGH533 HGH536 HGH600 HGH33 HGH145 HGH169 HGH356 HGH642 HGH648 FGH4095 FGH4096 FGH4097 FGH95 FGH96 FGH97 MGH2756 MGH2757 MGH4754 MGH4755 MGH4758 MGH2756 MGH2757 MGH754 MGH5K JG1101 JG1102 JG1201 JG1202 JG1203 JG1204 JG1301 JG1302 JG4006 JG4006A JG4246 JG4246A TAC-2 TAC-2M TAC-3A TAC-3B TAC-3C TAC-3D TAC-1 TAC-1B IC6 IC6A MX246 MX246A)?