【正文】 畢業(yè)設(shè)計（論文）中文摘要 摘要 奧氏體不銹鋼，是指在常溫下具有奧氏體組織的不銹鋼。鋼中含 Cr 約 18%、Ni8%~10%、 C 約 %時，具有穩(wěn)定的奧氏體組織。奧氏體鉻鎳不銹鋼包括著名的 18Cr8Ni 鋼和在此基礎(chǔ)上增加 Cr、 Ni 含量并加入 Mo、 Cu、 Si、 Nb、 Ti 等元素發(fā)展起來的高 CrNi 系列鋼。奧氏體不銹鋼無磁性而且具有高韌性和塑性，但強度較低，不可能通過相變使之強化，僅能通過冷加工進行強化，如加入 S， Ca，Se， Te 等元素，則具有良好的易切削性。本論文主要對奧氏體不銹鋼 1Cr18Ni9Ti熱處理過 程及其耐蝕性的研究，包括鍛造、預(yù)先熱處理、固溶處理、穩(wěn)定化處理等材料成型的完整的熱處理過程的介紹。并且本文還對不銹鋼 1Cr18Ni9Ti 耐蝕性的原因，怎樣做才能使其更具耐蝕性等等問題都做了一些介紹。不銹鋼熱處理過程中所用到的真空熱處理爐，其結(jié)構(gòu)、特性相當(dāng)復(fù)雜，本文也對真空熱處理爐做了一些介紹，用真空熱處理爐做的不銹鋼，可以防止不銹鋼氧化脫碳保證工件的表面質(zhì)量和機械性能。本文還對不銹鋼 1Cr18Ni9Ti 的化學(xué)熱處理、表面處理進行了一些介紹，表出面處理使其性能有更大的提高。最后文章對不銹鋼熱處理后的檢驗也做了 介紹，主要為金相、力學(xué)性能等方面的檢驗。 關(guān)鍵詞： 奧氏體 不銹鋼 1Cr18Ni9Ti 固溶處理 穩(wěn)定化處理 耐蝕性 畢業(yè)設(shè)計（論文）中文摘要 Title:1Cr18Ni9Ti heat treatment process and corrosion resistance of Abstract: Austenitic stainless steel at room temperature, refers to with austenite stainless steel. Steel containing Cr18%, Ni8%~10%, C approximately %, with a stable austenite. Austenitic chromium nickel stainless steel including the prestigious 18Cr8Ni steel and on the basis of increased Cr, Ni content and adding Mo, Cu, Si, Nb, Ti and other elements of development of high CrNi series steel. Austenitic stainless steel nonmagic and has high toughness and plasticity, but its strength is low, not possible through phase change to intensive, can only through the cold hardening, such as the accession to the S, Ca, Se, Te and other elements, it has good cutting performance. This thesis mainly on austenitic stainless steel 1Cr18Ni9Ti heat treatment process and corrosion resistance of the film, including the preliminary heat treatment, fing, solid solution treatment, stabilized material forming a plete heat treatment process are introduced. And this paper also stainless steel1Cr18Ni9Ti corrosion reason, what can I do to make it more corrosion resistance and so on have made some introduction. Stainless steel heat treatment process used in the vacuum heat treatment furnace, its structure, properties are plicated, this article also to the vacuum heat treatment furnace were introduced, with the vacuum heat treatment Keywords:Austenitic stainless stee 1Cr18Ni9Ti Solid solution treatment Stabilizing treatment Corrosion resistance 常州機電職業(yè)技術(shù)學(xué)院畢業(yè)論文 第 3 頁 共 51 頁 目 錄 1 緒論 ........................................................................................................................... 4 不銹鋼的歷史起源及分類 ................................................................................. 5 鐵素體不銹鋼 ........................................................................................ 6 馬氏體不銹鋼 ........................................................................................ 6 奧氏體不銹鋼 ........................................................................................ 6 不銹鋼的應(yīng)用及工作環(huán)境 ................................................................................. 7 不銹鋼在建筑業(yè)中的應(yīng)用 ....................................................................... 7 不銹鋼在海洋裝置上的應(yīng)用 ................................................................... 8 國內(nèi)外不銹鋼的發(fā)展情況 ............................................................................... 10 彩色不銹鋼 .......................................................................................... 10 日本廢不銹鋼利用 ............................................................................... 12 國內(nèi)外不銹鋼焊條使用現(xiàn)狀 ................................................................. 12 本論文的目的與意義 ...................................................................................... 14 2. 奧氏體不銹鋼 1Cr18Ni9Ti的熱處理工藝過程 .......................................................... 15 奧氏體不銹鋼 1Cr18Ni9Ti的冶煉研究及鍛造處理 ........................................... 15 1Cr18Ni9Ti 的凝固行為 ....................................................................... 15 1Cr18Ni9Ti 的鍛造處理 ....................................................................... 19 奧氏體不銹鋼熱處理設(shè)備 — 真空熱處理爐 ....................................................... 20 真空熱處理爐概述 ............................................................................... 20 真空熱處理爐設(shè)計 ............................................................................... 23 奧氏體不銹鋼 1Cr18Ni9Ti的固溶處理與穩(wěn)定化處理 ....................................... 27 奧氏體不銹鋼 1Cr18Ni9Ti的固溶處理 .................................................. 27 奧氏體不銹鋼 1Cr18Ni9Ti的穩(wěn)定化處理 .............................................. 29 奧氏體不銹鋼 1Cr18Ni9Ti的化學(xué)熱處理 .............................................. 33 全腐蝕試驗 .................................................................................................... 35 晶間腐蝕試驗 ................................................................................................. 36 3 奧氏體不銹鋼 1Cr18Ni9Ti的抗蝕性處理 ................................................................... 38 造成不銹鋼腐蝕的原因及機理 ........................................................................ 38 奧氏體不銹鋼 1Cr18Ni9Ti常用的抗蝕熱處理方式 ........................................... 40 固溶處理與穩(wěn)定化處理對耐蝕性能的影響 ....................................................... 41 討論與結(jié)論 .................................................................................................... 42 4 奧氏體不銹鋼 1Cr18Ni9Ti熱處理后檢驗 ................................................................... 44 試驗方法與結(jié)果 ............................................................................................. 44 結(jié)果分析 ........................................................................................................ 45 小結(jié) ............................................................................................................... 47 5 結(jié)論 ........................................................................................................................ 48 致謝 ............................................................................................................................