表面納米化對304不銹鋼滲碳層組織和性能的影響
發(fā)布時間:2018-09-06 13:12
【摘要】:利用表面機械研磨(SMAT)對304不銹鋼進行表面自納米化處理,并對其納米化表面進行滲碳處理。利用光學顯微鏡、X-射線衍射儀、磨料磨損試驗機和顯微硬度儀對處理后的不銹鋼表面組織和性能進行研究。結(jié)果表明:經(jīng)SMAT處理并滲碳后,滲碳層晶粒細化,組織發(fā)生奧氏體向馬氏體轉(zhuǎn)變,顯著提高了材料的力學性能;表面機械研磨處理后的材料的滲碳層厚度明顯高于直接滲碳的粗晶材料的滲碳層厚度,滲碳層組織中主要碳化物為Cr7C3和Cr23C6,顯微硬度也有明顯提高;經(jīng)過表面自納米化和滲碳復(fù)合處理,材料的耐磨性得到較大提升。
[Abstract]:The surface of 304 stainless steel was treated by surface mechanical grinding (SMAT), and the surface of 304 stainless steel was treated by Carburizing. The microstructure and properties of the treated stainless steel surface were studied by means of optical microscope X ray diffractometer, abrasive wear tester and microhardness tester. The results show that after SMAT treatment and Carburizing, the grain size of carburized layer is refined, and the austenite to martensite is transformed into martensite, which improves the mechanical properties of the material. The carburized layer thickness of the surface mechanical grinding treated material is obviously higher than that of the coarse grain material with direct carburizing. The main carbides in the carburized layer are Cr7C3 and Cr23C6, microhardness. After surface self-nanocrystalline treatment and Carburizing composite treatment, the wear resistance of the material was greatly improved.
【作者單位】: 西南交通大學材料科學與工程學院;中車青島四方機車車輛股份有限公司;中車長春軌道客車股份有限公司;
【基金】:國家重點研發(fā)計劃(2016YFB1200505-006)~~
【分類號】:TG156.81
[Abstract]:The surface of 304 stainless steel was treated by surface mechanical grinding (SMAT), and the surface of 304 stainless steel was treated by Carburizing. The microstructure and properties of the treated stainless steel surface were studied by means of optical microscope X ray diffractometer, abrasive wear tester and microhardness tester. The results show that after SMAT treatment and Carburizing, the grain size of carburized layer is refined, and the austenite to martensite is transformed into martensite, which improves the mechanical properties of the material. The carburized layer thickness of the surface mechanical grinding treated material is obviously higher than that of the coarse grain material with direct carburizing. The main carbides in the carburized layer are Cr7C3 and Cr23C6, microhardness. After surface self-nanocrystalline treatment and Carburizing composite treatment, the wear resistance of the material was greatly improved.
【作者單位】: 西南交通大學材料科學與工程學院;中車青島四方機車車輛股份有限公司;中車長春軌道客車股份有限公司;
【基金】:國家重點研發(fā)計劃(2016YFB1200505-006)~~
【分類號】:TG156.81
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1 王嘉琦;洪全;;中藥滲碳[J];機械工人;1958年11期
2 Р.Е.глинер;劉水才;;對滲碳深度與滲碳時間之間關(guān)系的分析[J];國外化學熱處理;1982年01期
3 王榮德;淺層滲碳[J];熱加工工藝;1986年01期
4 張庚喜;;測定滲碳層深度應(yīng)注意的幾個問題[J];建筑機械;1987年05期
5 陳國英;楊蘊林;;鋼的滲碳層深度與滲碳溫度之間關(guān)系的數(shù)學模型[J];洛陽工學院學報;1990年04期
6 田白玉;關(guān)于滲碳層深度檢測的探討[J];機械工人;1996年12期
7 劉天佑,曲濤;高濃度滲碳及其應(yīng)用[J];本溪冶金高等?茖W校學報;2000年02期
8 程曉敏,陳鐵群,游鳳荷,王貴富;滲碳層電磁特性的數(shù)值模擬[J];武漢理工大學學報(信息與管理工程版);2000年05期
9 馮再新,張治民,喬俊強,張玲娟,周賢賓;直齒輪“滲碳-溫擠”滲碳層厚度分布模型[J];材料科學與工藝;2002年02期
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