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個人中心收藏查看我的收藏0有用+10播報討論上傳視頻超硬航空鋁合金產品是以鋁為基體的鋅鎂銅系超硬鋁合金，通過熱處理（T6狀態(tài)）和預拉伸工藝（T651狀態(tài)）實現卓越機械性能，其抗拉強度達572MPa、屈服強度503MPa [1] [4]。該材料鋅含量5.1-6.1%、鎂2.1-2.9%、銅1.2-2.0%的合金配比形成MgZn2強化相 [1] [5]，密度2.81-2.85g/cm3，熱膨脹系數23.6μm/m·k（20-100℃） [4-5]。美國ASTM標準度工會評價該合金具有B類機械性能，兼具優(yōu)良的機械加工性能和陽極氧化能力 [1]。作為航空領域核心材料，應用于飛機結構件、火箭鍛環(huán)等場景 [3]，在模具制造、高速列車及運動器材領域可替代鈦合金實現輕量化 [1] [6]。材料類型變形鋁合金
密度2.81-2.85g/cm3
抗拉強度572MPa
屈服強度503MPa
合金系列7000系
處理狀態(tài)T651
鈦(Ti)0.2
硅(Si)0.4
錳(Mn)0.3

目錄
1材料特性2加工工藝3應用領域?航空航天?模具制造?軌道交通4物理化學性能5質量標準
材料特性
播報編輯通過鋅鎂銅合金元素形成固溶強化效應，鋅元素含量5.1-6.1%為主要強化成分 [1] [3] [5]。經T6固溶淬火和人工時效處理后，材料硬度可達150HB [2] [4]，彈性模量71GPa，延伸率≥6% [3-4]。預拉伸工藝使殘余應力降低80%以上，切割加工變形量小于0.1mm/m。對比普通鋼材，其比強度（強度/密度比）高出40%，在保持成本優(yōu)勢的同時實現結構輕量化 [1]。電導率33% IACS（20℃）、熔點475-635℃的特性使其適用于電氣元件制造 [5]。
加工工藝
播報編輯采用擠壓成型工藝生產棒材，直徑覆蓋20-420mm范圍，板材厚度可達300mm [6]。關鍵工序包括：530℃固溶處理保溫4小時 [4-5]水冷淬火速率≥300℃/min人工時效溫度120℃，保溫24小時 [1] [3-5]預拉伸變形量1.5-3%消除應力 [4]加工過程實施超聲波探傷檢測，確保材料內部無雜質氣泡。表面處理采用鉻酸陽極氧化工藝，膜厚15-25μm [1]。
應用領域
播報編輯航空航天作為飛機蒙皮、翼梁、起落架支撐結構材料，可在-55℃至120℃環(huán)境穩(wěn)定服役 [1] [3]。波音737垂尾鍛件采用該材料減重30%，F-16戰(zhàn)斗機機身框架應用占比達45% [4]。模具制造用于吹塑模具時壽命可達50萬模次 [1] [3] [6]，相較P20鋼模具減重60% [1] [6]。超聲波塑焊模具應用案例顯示，其耐磨性比6061鋁合金顯著提升 [1] [3]。軌道交通高鐵轉向架構件應用實現輕量化效果，制動系統(tǒng)支架疲勞壽命超過1×10^7次循環(huán) [4]。上海磁懸浮列車導向軌支架采用該材料，具有高強度特性（抗拉強度572MPa，屈服強度503MPa）。
物理化學性能
播報編輯熱物理參數包含：熱導率：130W/(m·K)（20℃）線膨脹系數：23.6μm/m·k（20-100℃） [5]耐腐蝕性能通過3.5%NaCl溶液浸泡試驗驗證，年平均腐蝕速率＜0.02mm。應力腐蝕門檻值KISCC達29MPa·m^1/2，優(yōu)于多數航空鋁合金 [4] [6]。
質量標準
播報編輯執(zhí)行GB/T 3191-2010、ASTM B221標準，化學成分包含鋅(5.1-6.1%)、鎂(2.1-2.9%)、銅(1.2-2.0%)等元素 [1-6]。力學性能檢測按ASTM E8標準進行，棒材縱向取樣拉伸試樣標距直徑6mm，應變速率0.015mm/mm·min [3] [5]。成品需提供材質證明書，包含光譜分析報告和力學性能檢測數據。新手上路成長任務編輯入門編輯規(guī)則本人編輯我有疑問內容質疑在線客服官方貼吧意見反饋投訴建議舉報不良信息未通過詞條申訴投訴侵權信息封禁查詢與解封?2025?Baidu?使用百度前必讀?|?百科協議?|?隱私政策?|?百度百科合作平臺?|?京ICP證030173號?京公網安備11000002000001號window.PAGE_DATA= 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7075－T651 產品詳細介紹：油氣輸送管線用鋼板主要鋼號執(zhí)行標準規(guī)格范圍及交貨狀態(tài)主要用途X42、X46、X52（L360）、X56（L390）X60（L420）、X65（L460）、X70、X80　API　1、規(guī)格范圍：厚度8mm-60mm寬度1500mm-4020mm長度3000mm-18000mm，鋼板最大單重25噸；2、交貨狀態(tài)：根據性能及用戶需要，鋼板可熱軋、控軋、正火、退火、回火、正火+回火、調質等狀態(tài)交貨；3、探傷及厚度方向性能：可生產附加探傷要求和Z15-Z35抗撕裂（厚度方向性能）鋼板，也可按ASTM、A770等標準提供Z向性能鋼板。

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