稀土元素鈰對204Cu不銹鋼組織與性能的影響
發(fā)布時間：2018-12-27 10:01
【摘要】：隨著現(xiàn)代社會和工業(yè)的迅速發(fā)展，不銹鋼的使用量與日俱增。在不銹鋼性能基本不變的條件下，對不銹鋼的成本進行控制已經成為了目前不銹鋼產業(yè)急需解決的問題之一。在該背景下，200系列不銹鋼應運而生，200系列不銹鋼是以錳、氮代替部分鎳的奧氏體不銹鋼，其已經在各個領域取得廣泛的應用。稀土元素在鋼中能夠與其他的合金元素作用來改善其綜合性能，我國作為稀土產量大國，通過向不銹鋼中添加微量稀土元素Ce，研究稀土Ce對其綜合性能的影響對于不銹鋼產業(yè)的發(fā)展具有十分重要的作用。 本研究是在204Cu不銹鋼中加入一定含量的稀土Ce，研究稀土Ce對204Cu不銹鋼組織和性能的影響。通過微觀組織觀察以及夾雜物形狀與成分的分析，研究了稀土元素鈰對204Cu不銹鋼組織與夾雜物的影響；通過周期浸潤實驗、電化學實驗以及晶間腐蝕實驗等方法研究稀土Ce對204Cu不銹鋼耐腐蝕性能的影響。通過常溫拉伸、沖擊實驗研究了稀土Ce對204Cu不銹鋼力學性能的影響。 實驗結果表明：稀土Ce加入到鋼中以后可以使晶粒細化，且晶粒細化的程度隨著鋼中稀土Ce含量的提高而逐漸增大。稀土Ce加入到204Cu不銹鋼中以后，對鋼中的夾雜物起到了變質作用，改變了夾雜物的形態(tài)及成分。但是當鋼中稀土Ce含量超過特定的范圍時，會產生尺寸較大的稀土復合夾雜物，使204Cu不銹鋼的耐腐蝕性能及力學性能出現(xiàn)下降。隨著鋼中稀土Ce含量的提高，逐步改善了204Cu不銹鋼的耐腐蝕性能，但是當鋼中稀土Ce含量超過0.029%時，實驗鋼的耐腐蝕性能出現(xiàn)了一定程度的降低。添加適量稀土Ce能夠顯著的提高204Cu不銹鋼的力學性能，當鋼中稀土Ce含量為0.029%時，204Cu不銹鋼能夠得到最好的力學性能。
[Abstract]:With the rapid development of modern society and industry, the use of stainless steel is increasing. The cost control of stainless steel has become one of the most urgent problems in stainless steel industry. Under this background, 200 series stainless steel emerges as the times require. 200 series stainless steel is austenitic stainless steel with manganese and nitrogen instead of some nickel. It has been widely used in various fields. Rare earth elements can interact with other alloying elements in steel to improve their comprehensive properties. As a large rare earth producing country, China adds trace rare earth element Ce, to stainless steel. It is very important for the development of stainless steel industry to study the influence of rare earth Ce on its comprehensive properties. The effect of rare earth Ce on the microstructure and properties of 204Cu stainless steel was studied by adding a certain amount of rare earth Ce, to 204Cu stainless steel. The effect of rare earth element cerium on the microstructure and inclusions of 204Cu stainless steel was studied by means of microstructure observation and analysis of the shape and composition of inclusions. The effect of rare earth Ce on the corrosion resistance of 204Cu stainless steel was studied by means of periodic soakage experiment, electrochemical test and intergranular corrosion test. The effect of rare earth Ce on mechanical properties of 204Cu stainless steel was studied by tensile and impact tests at room temperature. The experimental results show that the addition of rare earth Ce to the steel can refine the grain size, and the degree of grain refinement increases with the increase of the content of rare earth Ce in the steel. After the addition of rare earth Ce into 204Cu stainless steel, the inclusions in the steel were modified, and the shape and composition of the inclusions were changed. However, when the content of rare earth Ce in the steel exceeds a specific range, the large size rare earth composite inclusions will be produced, which will decrease the corrosion resistance and mechanical properties of 204Cu stainless steel. With the increase of rare earth Ce content in steel, the corrosion resistance of 204Cu stainless steel was improved gradually, but when the content of rare earth Ce in steel exceeded 0.029, the corrosion resistance of experimental steel decreased to a certain extent. The mechanical properties of 204Cu stainless steel can be significantly improved by adding a proper amount of rare earth Ce. When the content of rare earth Ce in the steel is 0.029, the best mechanical properties of 204Cu stainless steel can be obtained.
【學位授予單位】：內蒙古科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG142.71
本文編號：2392897
[Abstract]:With the rapid development of modern society and industry, the use of stainless steel is increasing. The cost control of stainless steel has become one of the most urgent problems in stainless steel industry. Under this background, 200 series stainless steel emerges as the times require. 200 series stainless steel is austenitic stainless steel with manganese and nitrogen instead of some nickel. It has been widely used in various fields. Rare earth elements can interact with other alloying elements in steel to improve their comprehensive properties. As a large rare earth producing country, China adds trace rare earth element Ce, to stainless steel. It is very important for the development of stainless steel industry to study the influence of rare earth Ce on its comprehensive properties. The effect of rare earth Ce on the microstructure and properties of 204Cu stainless steel was studied by adding a certain amount of rare earth Ce, to 204Cu stainless steel. The effect of rare earth element cerium on the microstructure and inclusions of 204Cu stainless steel was studied by means of microstructure observation and analysis of the shape and composition of inclusions. The effect of rare earth Ce on the corrosion resistance of 204Cu stainless steel was studied by means of periodic soakage experiment, electrochemical test and intergranular corrosion test. The effect of rare earth Ce on mechanical properties of 204Cu stainless steel was studied by tensile and impact tests at room temperature. The experimental results show that the addition of rare earth Ce to the steel can refine the grain size, and the degree of grain refinement increases with the increase of the content of rare earth Ce in the steel. After the addition of rare earth Ce into 204Cu stainless steel, the inclusions in the steel were modified, and the shape and composition of the inclusions were changed. However, when the content of rare earth Ce in the steel exceeds a specific range, the large size rare earth composite inclusions will be produced, which will decrease the corrosion resistance and mechanical properties of 204Cu stainless steel. With the increase of rare earth Ce content in steel, the corrosion resistance of 204Cu stainless steel was improved gradually, but when the content of rare earth Ce in steel exceeded 0.029, the corrosion resistance of experimental steel decreased to a certain extent. The mechanical properties of 204Cu stainless steel can be significantly improved by adding a proper amount of rare earth Ce. When the content of rare earth Ce in the steel is 0.029, the best mechanical properties of 204Cu stainless steel can be obtained.
【學位授予單位】：內蒙古科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TG142.71
【參考文獻】
中國期刊全文數據庫 前10條
1 沈利群;稀土元素對金屬材料性能的影響[J];兵器材料科學與工程;1994年02期
2 張發(fā)余,姚淑霞;電化學測定幾種鋼材在溶液中的腐蝕行為和腐蝕速度[J];表面技術;1994年04期
3 崔大偉;曲選輝;李科;;高氮低鎳奧氏體不銹鋼的研究進展[J];材料導報;2005年12期
4 ;Precipitation of Epsilon Copper in Ferrite Antibacterial Stainless Steel[J];Journal of Materials Science & Technology;2008年05期
5 趙路遇;微量稀土元素在鑄鋼中的應用[J];材料開發(fā)與應用;2003年03期
6 哈勝男;任頌贊;謝春生;陳德華;馬春霞;;200系列不銹鋼鋼絲失效分析[J];材料開發(fā)與應用;2008年01期
7 尹桂勤,張莉華,常守文,韓恩厚;土壤腐蝕研究方法概述[J];腐蝕科學與防護技術;2004年06期
8 吳蔭順,謝建輝,汪軒義,方智,曹備,張琳;氯化物溶液中不銹鋼腐蝕疲勞裂紋初始萌生的過程機理[J];腐蝕科學與防護技術;1999年01期
9 黃桂橋;不銹鋼在海洋環(huán)境中的腐蝕[J];腐蝕與防護;1999年09期
10 徐增華;金屬耐蝕材料 第五講馬氏體不銹鋼[J];腐蝕與防護;2001年05期
，本文編號：2392897
本文鏈接：http://sikaile.net/kejilunwen/jinshugongy/2392897.html
教材專著
