摘要
不銹鋼從20世紀(jì)初發(fā)明至今不足百年的時間，但其發(fā)展和應(yīng)用的勢頭卻異常迅猛。特別是從20世紀(jì)60年代末以來，全世界不銹鋼的產(chǎn)量基本保持年均4％的增長率，不銹鋼的應(yīng)用范圍逐步擴(kuò)大到了國民經(jīng)濟(jì)的各個領(lǐng)域。不銹鋼之所以能得到如此迅猛的發(fā)展，一個重要的因素是其具有耐蝕、耐熱性。不銹鋼熱處理工藝的優(yōu)劣對不銹鋼的耐蝕、耐熱性有很大影響，而且對不銹鋼的加工性能起著決定性的作用。因此，不銹鋼的熱處理工藝在不銹鋼的生產(chǎn)過程中一直處于十分重要的地位。
奧氏體不銹鋼的高塑性、高耐蝕性、良好的焊接性能、韌性和和低溫韌性、無磁性、易加工的優(yōu)點(diǎn),使其在石油、化工、食品及醫(yī)藥等行業(yè)得到廣泛的應(yīng)用.但由于奧氏體不銹鋼的硬度偏低、耐磨性較差,使用受到一定的限制。為了提高奧氏體不銹鋼的硬度和耐磨性,應(yīng)用較多的是對奧氏體不銹鋼表面進(jìn)行氮化處理。傳統(tǒng)的不銹鋼氮化工藝雖然提高了不銹鋼的硬度,卻在氮化層中析出了氮化物,由于氮化物在奧氏體晶界擇優(yōu)生長,消耗了鉻,導(dǎo)致奧氏體基體中的鉻減少,結(jié)果使不銹鋼的耐蝕性下降采用固溶滲氮工藝不但提高了奧氏體不銹鋼的硬度和耐磨性,而且提高了其耐蝕性能。


關(guān)鍵詞： 不銹鋼 固溶滲氮 硬度 耐磨性
Title： Stainless steel solid solution nitriding



Abstract：
Stainless steel from the beginning of the twentieth Century invention has less than a hundred years, but its development and application of the momentum very quickly. Especially from the nineteen sixties since the end of the world, stainless steel production base to maintain an average annual growth rate of 4%, the application of stainless steel is gradually extended to all areas of the national economy. Stainless steel can be so swift and violent development, an important factor in its corrosion resistance, heat resistance. Stainless steel heat treatment process the quality of stainless steel corrosion resistance, heat resistance have great influence on the processing of stainless steel, but also plays a decisive role in the performance. Therefore, stainless steel heat treatment technology in stainless steel production process has been in a very important position.
Austenitic stainless steel with high plasticity, high corrosion resistance, good welding performance, toughness and low temperature toughness, non-magnetic, easy processing advantages, so that in the petroleum, chemical, food and pharmaceutical industries are widely used. But due to low hardness, wear resistance of austenitic stainless steel is used, subject to certain restrictions. In order to improve the hardness and wear resistance of austenitic stainless steel, is widely applied on the surface of austenitic stainless steel nitriding. The traditional stainless steel nitriding process can improve the hardness of stainless steel,
but in the nitride layer precipitated nitride, nitride at austenite grain boundaries due to preferential growth, consumption of chromium, lead in austenite matrix of chromium decreased, the results made of stainless steel corrosion resistance decreased by solid solution nitriding of austenitic stainless steel will not only improve the hardness and wear resistance, but also improve its corrosion resistance.


Keywords : Stainless steel Solid solution nitriding Hardness Wear resistance
目錄
1 緒論••••••••••••••••••••••••••••••••••••••••••••••••••••••••6
1.1 不銹鋼材料簡介••••••••••••••••••••••••••••••••••••••••••••••6
1.1.1 不銹鋼的分類•••••••••••••••••••••••••••••••••••••••••••••••7
1.1.2 不銹鋼的主要作用•••••••••••••••••••••••••••••••••••••••••••8
1.2 不銹鋼熱處理特點(diǎn)••••••••••••••••••••••••••••••••••••••••••••8
1.2.1 奧氏體不銹鋼•R..