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一 填充题 解答: 1 新旧两相之间自由能差达到马氏体相变所需的最小驱动力的温度 2 条状马氏体,针状马氏体3 位错,孪晶 4 马氏体中固溶的碳量较少,亚结构(位错、马氏体条间存在10～20nm残留奥氏体薄膜)5 高,大,一定的,良好的 6 成束的、大致平行排列的铁素体和条间的渗碳体,羽毛 7 呈针状或片状的铁素体和位于铁素体内的碳化物,针 8 贝氏体中铁素体晶粒大小,固溶强化,碳化物的弥散强化 9 低,低 10 马氏体分解,残留奥氏体转变,碳化物类型的变化,α相回复和再结晶 11 不可逆,可逆 二 是非题 解答:1+ 2+ 3+ 4 — 5+ 6+ 7 — 8+ 9- 10 — 11+ 12+ 13 — 14 + 15 — 16 + 17 — 18 + 19 + 20 —
A Filled Question Answer: 1 The temperature at which the free energy difference between the old and the new phases reaches the minimum required for martensitic transformation 2 Martensite, acicular martensite 3 dislocation, twin 4 martensite In the solid solution of carbon less substructure (dislocation, martensite between the existence of 10 ~ 20nm residual austenite film) 5 high, large, certain, good 6 bundles, generally parallel to the iron Between the body and the bar of cementite, feather 7 acicular or lamellar ferrite and carbide located in ferrite, pin 8 bainite ferrite grain size, solid solution strengthening, carbide Dispersion strengthening 9 Low and low 10 Martensite decomposition, residual austenite transformation, carbide type change, α-phase recovery and recrystallization 11 Irreversible and reversible 2 No problem 1+ 2+ 3+ 4 - 5+ 6 + 7 - 8 + 9 - 10 - 11+ 12+ 13 - 14 + 15 - 16 + 17 - 18 + 19 + 20 -