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NM360耐磨鋼管的各項性能指標數值模擬

更新時間:2020-03-24 18:43點擊次數:
NM360耐磨鋼管的發展具有舉足輕重的作用。銅基合金是人類使用較早的高鉻鋼管材料,在當今高速發展的社會仍然占據著重要地位,廣泛應用于電力、汽車、國防、家電和通訊等領域,是不可或缺的材料。采用DEFORM-3D有限元數值模擬軟件對粉末材料限制型高壓扭轉成形進行數值模擬。主要研究不同工藝參數對高鉻鋼管粉末材料限制型高壓扭轉成形等效應變的影響。
      母相時效時易發生p,一Q+p分解,從而使高鉻鋼管不再發生馬氏體相變;熱循 環過程中部分馬氏體發生穩定化,導致可逆馬氏體轉變量減少,同時產生位錯,使馬氏體有序度降低。從高鉻鋼管設計角度考慮,提高Cu基記憶合金的耐熱穩定性(包括抗馬氏體穩定化能力,抗中溫時效分解能力和抗熱循環衰減能力)的途徑應該是:高鉻鋼管電觸頭專利技術,在銅粉中添加一定比例的納米微晶物質和改性元素,并對粉料進行表面活性處理。
       采用粉末冶金新工藝,在成型燒結過程中產生彌散強化效應,利用材料改性和動態能量改性相結合的作用機制,使其成為綜合性能優良的電觸頭產品,是銀基合金電觸頭的經濟型替代品。結果表明:摩擦因子較小時,對高鉻鋼管坯料等效應變的影響較??;當摩擦因子增大到一定值時,高鉻鋼管坯料等效應變顯著增大。增加壓力,等效應變增加,但增加幅度逐漸減小。
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