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本文研究了PH15—7Mo沉淀硬化不锈钢的马氏体恒温转变。确定了钢中以恒温马氏体转变为主,恒温转变速度随稳定化程度的加深,转变初速减缓,孕育期增长,“C”曲线右移,恒温马氏体转变图呈双“C”型曲线,两个“C”型曲线的顶点分别为-60℃及-100℃。恒温马氏体最大形成量可达近65％(在-60℃时)。相变的激治能Q(?)1780卡/克分子。高温区的“C”曲线可看作γ→∈的转变曲线,低温区的“C”曲线是直接由γ转变到α′(马氏体)的。
This paper studied the PH15-7Mo precipitation hardening stainless steel martensitic transformation. The change of constant temperature martensitic transformation was determined with the deepening of the degree of stabilization. The initial velocity of transformation slowed down and the growth period increased. The curve of “C” Curve, the vertices of the two “C” curves are -60 ° C and -100 ° C, respectively. The maximum formation of constant temperature martensite up to 65% (at -60 ℃). The transformation of the excitement Q (?) 1780 cards / molecule. The “C” curve of the high temperature region can be seen as the transformation curve of γ → ∈, and the “C” curve of the low temperature region changes directly from γ to α ’(martensite).