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第九章碳鋼

第九章碳鋼. 改進教學計畫編號：教改進 -97C-003 計畫主持人：楊慶彬. 9-1 鋼中元素對其特性之影響. 1. 碳 (C) 碳為鋼中最重要的成分，含碳量變化時，鋼內組織及機械性質亦隨之變化。 2. 錳 (Mn) 錳在鋼內一部份與 S 化合為 MnS ，消除 S 所造成的 熱脆性 ；一部份溶入鋼中成為 Mn 3 C ，可降低鋼的變態點，使變態速率減慢，增加淬火效果。. 含碳量對其機械性質影響. 9-1 鋼中元素對其特性之影響. 3. 矽 (Si) 可增加鋼的硬度、強度和彈性限，但會減少伸長率及衝擊值，矽會使晶粒變粗。 4. 磷 (P)

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第九章碳鋼

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  1. 第九章碳鋼 改進教學計畫編號：教改進-97C-003 計畫主持人：楊慶彬

  2. 9-1鋼中元素對其特性之影響 1.碳(C) 碳為鋼中最重要的成分，含碳量變化時，鋼內組織及機械性質亦隨之變化。 2.錳(Mn) 錳在鋼內一部份與S化合為MnS，消除S所造成的熱脆性；一部份溶入鋼中成為Mn3C，可降低鋼的變態點，使變態速率減慢，增加淬火效果。

  3. 含碳量對其機械性質影響

  4. 9-1鋼中元素對其特性之影響 3.矽(Si) 可增加鋼的硬度、強度和彈性限，但會減少伸長率及衝擊值，矽會使晶粒變粗。 4.磷(P) 磷能使鋼料在常溫加工時易生龜裂，磷為鋼的常溫脆性。 5.硫(S) 硫維鋼之高溫脆性。

  5. 9-2碳鋼之用途

  6. 9-3一般結構用碳鋼

  7. 9-4機械構造用碳鋼

  8. 9-5鑄鋼

  9. 9-5鑄鋼

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