片状马氏体

实验结果表明：采用等温淬火使钢的晶界优先生成晶界下贝氏体代替晶界片状马氏体，经低温回火后钢的回火脆性相对比较小。

The result is that the tempering brittleness is smaller after tempering when the lower bainite instead of the plate martensite at the grain-boundary of the patent in the process of quenching .

在该温度以下淬火时，30、40、60钢先形成板条马氏体，后形成片状马氏体；

The higher the carbon content in steel , the higher the critical austenitizing temperature for obtaining full lath martensite is The lath martensite comes to form first , and second the plate martensite in quenched 30 、 40 、 60 steel .

高碳钢中片状马氏体的分形（Fractal）特征

On Fractal of martensite plates in a high carbon steel

{225}f片状马氏体宏观点阵变形特征的AFM观察与定量分析

AFM observation and quantitative analysis of macroscopic lattice deformation character in { 225 } f martensite transformation

随钢中含碳量的增加，原奥氏体晶粒内片状马氏体的分形维数Df增加。

The fractal dimension Df of plate martensites formed in an original austenite grain gets a raise with the increase of carbon in carbon steels .

研究发现，碳钢马氏体的硬度由板条马氏体和片状马氏体的硬度决定，在0.3%～1.0%C范围内存在一个由板条马氏体和片状马氏体混合而造成的附加硬度ΔHB；

And there is secondary hardness △ HB which is consisted of martensite lath and martensite plate when they are mixed in the range of 0.3 % - 1.0 % C.

用光镜、透射电镜对8种Fe&C，Fe-Cr-C及Fe-Ni-C合金中的片状马氏体进行了一般观察、原位观察及动态观察。

The plate martensites in eight Fe-C , Fe-Cr-C and Fe-Ni-C alloys have been studied using gener - al , in situ and dynamic observations by optical microscope and transmission electron microscope .

作者认为这种{225}y马氏体是一种形态介于板条状和片状马氏体之间的一种特殊过渡形态马氏体。

We regard the { 225 } _ γ martensite as a special kind of martensite in transition state .

本文认为，片状马氏体平行生长的原因，在于马氏体转变的塑性协调作用。

It is the view of the authors that the cause of the parallel growth of plate martensites lay in the action of plastic coordination during martensite transformation .

而{2,2,5}f片状马氏体和板条马氏体的宏观点阵变形特征不符合“不变平面应变”特征。

The { 3 , 10 , 15 } _f thin-plate shaped martensite exhibited " N " - shaped macroscopic lattice deformation , which is in agreement with the concept of " invariant plane strain " .

锤头浇注后，于850℃开箱落砂油淬+260℃×2h回火，得到共晶渗碳体、少量片状石墨、马氏体及残余奥氏体的混合组织，硬度达HRC58～61，韧性满足使用要求。

The temperature of shakeout , and tempered at 260 ℃ for two hours . The eutectic cementite , a few of flake graphite , martensite and retained austenite were obtained . The hammer hardness reached the level of HRC58 ~ 61 and its toughness meets also the operating requirement .