阿狗 asked in 科學工程學 · 2 decades ago

機械工程材料文章 (英翻中) ~誰人幫我翻譯...20點

Rapid cooling of steel produces a metastble phase called martensite (Figure 5-33) which is defined as an interstitial supersaturated solid solution of carbon in iron having a bct lattice structure. The transformation of martensite results from a three-dimensional mechanical shearing action that distorts that distorts the structure, producing hardness and brittleness. Martensite transformations occur in other metals and alloys, such as titanium, lithium, iron, nickel, and copper-aluminum. To summarize what we have said about equilibrium and no equilibrium conditions of cooling, our initial step was to heat the basic components of steel (into the austenite forming region) to produce austenite, a single-phase solid solution of carbon in gamma(y) iron. Once we formed austenite, we could cool it under equilibrium conditions to produce a two-phase mixture of ferrite and cementite called pearlite.The carbon in the cementite distorts this structure, producing qualities of strength and hardness.

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  • 2 decades ago
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    迅速冷卻的鋼會產生一種穩態(準穩定態)把這種情況定義為麻田散鐵,那ㄧ個解釋成空隙間使過度飽和的純碳的鐵溶液.

    變形的麻田散鐵起因於”一次三維機器剪切而扭曲變形的結構”而產生硬度性和脆弱性.

    麻田散鐵的轉變在其他金屬和合金內發生例如鈦,鋰,鐵,鎳和銅鋁.

    為了要概述我們已經說過關於平衡和沒有平衡的冷卻情況,我們的最初步驟將加熱鋼(進入沃斯田鐵形成區域之內)基本的成分組成產生沃斯田鐵,一種單(晶)相材料純碳的鐵溶液gamma(γ) 鐵.

    一旦我們形成了沃斯田鐵,我們可以在冷卻平衡的情況下產生兩種相的混合物肥粒鐵和雪明碳鐵稱之為波來鐵.

    在雪明碳鐵裡的碳使這組織變形,產生出強度和硬度.

    Source(s): 機械材料課本
  • 右手
    Lv 4
    2 decades ago

    回答的很好

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