Failure analysis of the first shaft assembly which ruptured in the alignment has showed: There is a left-shift of eutectic point in the Fe-C equilibrium diagram when the steel contains Chromium and Manganese.
、Cr元素的存在使得Fe -C相图中共析点左移 ,使有效碳当量增加 ,造成心部硬度偏高 ,承受冲击及弯曲的性能下降。
Several key factors that affect SiC, as a dispersing agent, eductior in electrolossNi-P-SiC composite coatings have been experimentally studied,and its mechanism is also partiallycarried out.
在实现Ｎｉ－Ｐ－ＳｉＣ化学复合镀时，影响分散剂ＳｉＣ在镀层中共析的因素很多。
The aging process of isothermal transformation and eutectoid transformation were studied by using DSC and high temperature microscopy.
采用差示扫描量热分析法(DSC)和高温显微分析法分别研究了ZA27合金的等温时效转变过程和加热过程中的共析转变。
The resnlts slow that tha eutectoid transformation constituents tends to become granulation with decrease in isothermal temperature, and with extension of isothermal time the lamellar constituents become coarse of granule.
研究结果表明 :在不同的温度下进行等温处理 ,随等温温度的下降 ,共析转变产物有粒状化趋势 ;随等温转变时间的延长 ,共析转变产物粗化或由层片状粒化。
It was found that the eutectoid transformation products from β-Ti(H) were consisted of δ hydrides and α-Ti,forming a micro-polycrystalline aggregate, while γ hydride was precipitated from α-Ti(H) directly.
结果表明：β－Ｔｉ（Ｈ）共析转变产物是δ氢化物和α－Ｔｉ，不同形状的δ氢化物和α－Ｔｉ微晶组成了微晶区；γ氢化物直接从α－Ｔｉ（Ｈ）中析出。
When aging temperature raises,little eutectoid phases precipite in the alloy at different temperature,and with the emergence of needle martensite appearing.
结果表明:Cu-Al-X系形状记忆合金中,Mn和Ti的加入细化了组织,并且形成了富Mn和富Ti相;随着时效温度的升高,在不同的特定温度下,Cu-24Al-3Mn-2Ti(原子分数,%)合金中会有少量的共析相析出,且伴随有针状马氏体的出现;在400℃时效后,合金的显微组织呈现最佳自协作状态,马氏体板条细密有序,富Ti和Al相均匀地弥散在组织中,合金中没有或有很少量共析产物出现。
Influence of undercooling on dynamic transformation and microstructure evolution in eutectoid steel;
过冷对共析钢动态相变和组织演变的影响
Spheroidizing and ultra-refining of structure in eutectoid steel during warm deformation;
共析钢温变形过程的组织球化与超细化
Formation of proeutectoid ferrite during dynamic transformation of undercooled austenite in a eutectoid steel;
共析钢过冷奥氏体动态相变过程中先共析铁素体的生成
The spheroidizing annealing technologies were proposed with aid of calphad technique to process two kinds of UHCs through the porced eutectoid transformation mechanism of the austenite of inhomogenous carbon concentration, which consist of austenitizing at intermediate temperature in three phases (γ(fcc)+α(bcc)+cem) equilibrium aera and soaking below the eutectoid transformation temperature.
利用碳浓度不均匀奥氏体离异共析转变机制 ,借助于相图计算技术 ,对UHCs 1 0Al(含Al 1 0 %wt % )和UHCs 1 5Al(含Al1 5wt % )两种锻造超高碳钢提出了在三相区奥氏体化并在共析转变温度低限等温球化工艺 ,并对不同球化组织的力学性能进行了测定。