close


故意過熱以產生粗大的麻田散鉄+沃斯田鉄. Ductile iron intentionally over-heated by induction heating to produce very coarse Martensite in the matrix of Austenite. Color etched. Incipient melting occured on grain boundaries. K: Karbid, Carbide. 這樣粗大的Martensite性能很差, 中看不中用.
 
  
 
 
 
 
 


離感應層稍遠的地方. Core area ajacent to induction hardened layer. Halo of low carbon Martensite surrounding  graphite nodules. Previous Pearlite areas have transfored into Martensite.



arrow
arrow
    全站熱搜

    吳老師 發表在 痞客邦 留言(0) 人氣()