钢的强韧性与热处理组织的关系——特别是奥氏体的影响

• 作 者: 田中实
• 出 处: 兵器材料科学与工程
• 发表日期: 1988年07期
• 关键词: 韧性要求 板条马氏体 固溶 冲击功 试验钢 屈服强度 超高强度钢 韧脆转变温度 脆性断裂 等温转变

一、绪言 在钢的热处理组织中,有淬火时残留的奥氏体(以下以γ表示),也有马氏体对效钢在时效处理时马氏体(以下以α′表示)发生分解而析出的γ。这些γ与α′或与回火α′,并存时钢的强韧性受如下几个因素的影响:①γ的热稳定性以及在外力作用下的稳定性,②与γ共存的α′的性能,③γ与α′的形状,④γ的存在形态,⑤与γ和α′共存时析出相的种类等。

I. INTRODUCTION In the heat treatment of steel, there are austenite (hereinafter referred to as γ) remaining during quenching and martensite and martensite, and martensite (hereinafter referred to as α ’) decomposed and precipitated during the aging treatment Γ. The strength and toughness of steel co-exist with these γ and α ’or with tempering α’ are affected by the following factors: ① the thermal stability of γ and its stability under external forces, ② the α ’coexistence with γ, (3) the shape of γ and α ’, the existence of γ, and the type of precipitation phase when γ and α’ coexist.