高温回火

正火、退火及淬火+高温回火组织的C1比较接近。

The difference in velocity among normalizing , annealing and high tempering structures are all approaching .

Cr-Mo-V钢焊缝组织的高温回火转变研究

Microstructural Transformation of Cr-Mo-V Steel Welds in High Tempering

正火组织的C1介于淬火后中温回火及高温回火产物组织的C1之间。

The velocity in normalizing structure is between the velocity in medium temperature and high temperature tempering production after quenching .

W（18）Cr4V高速钢显微组织在高温回火状态下的转变过程

Process of Changing of Micro-structure of W_ ( 18 ) Cr_4V High Speed Steel in High Temperature Temper Condition

和530℃高温回火情况相比，耐磨性明显提高，是用于生产E型磨煤机磨球的更为合适的热处理工艺。

Comparing with 530 ℃ tempering treatment , the steel has the better wear resistance , and this heat treatment is more suitable to treat balls of E-type pulverizer .

结果表明，用LD钢制作钢板弹簧中心孔冲头，经1120°淬火、540℃高温回火处理后可以获得较好的力学性能；

The results show that good properties of the centre hole punch can be obtained by quenching from 1120 ℃ and high temperature tempering at540 ℃;

研究结果表明：足够大的锻比，锻造后用低温淬火（960℃淬油）、高温回火（660℃h）代替普通退火处理，可以获得更高的J（IC）值。

Results of the experiment show that large forging ratio , lower quenching temperature ( 960 ℃, oil quenching ) and tempering ( 660 ℃, 5h ) after forging may make value higher than common-ly annealed one .

高温回火，M2C粗化并失去与基体的共格关系，钢强度下降。

Tempering at higher temperatures resulted in loss of strength was suggested to be the result of precipitate coarsening and loss of the coherent with the matrix .

通过对阻力曲线（J＿R－△a）的剖析，结合TEM组织和SEM断口分析，研究了两种中碳铬镍钼钢高温回火态的延性断裂韧度。

Through the resistance curves ( J_R - △ a ) measurement and in conbination with the TEM microstructure and SEM surface fracture analysis , the ductile fracture toughness of two high tempered medium carbon Cr-Ni-Mo steels was investigated .

中间处理采用750℃×5h高温回火为宜，最终热处理采用油淬后三次高温回火。

It is proper for middle treatment to adopt high temperature tempering after oil quenching and three-time high temperature tempering is adopted as final heat treatment .

其高温回火脆性是晶界上M6C碳化物的析出长大和由此所产生的晶界磷偏聚共同作用的结果。

The tempering embrittlement results from the precipitation and growth of M_6Ccarbides particles and the segregation of phosphorus at prior austenite grain boundaries .

Fe-Mn-Ti合金在冷加工后于540℃左右高温回火可以得到较高的磁矫顽力。本研究用退磁曲线测量；

The cold worked Fe-Mn-Ti alloy after tempering at ~ 540 ℃ can get relatively high value of coercive force .

最后，对试验钢在利用高温回火细化晶粒过程中表现出的混晶现象进行了研究，发现Nb微合金化无碳化物贝／马复相钢具有典型的晶界遗传性。

The mixed grain phenomenon after normal quenching of the high temperature quenching and high temperature tempering Nb micro-alloying carbide-free bainite / martensite ( CFB / M ) multiphase steel specimen was studied , and it proved that the steel has typical grain boundary inheritance .

通过循环热处理和改变奥氏体化温度两种方法获得不同的原奥氏体晶粒尺寸，研究了不同晶粒尺寸对高温回火中碳Cr-Mo钢力学性能的影响。

The effect of austenite grain size , which was obtained by changing the austenitizing temperature and using repeated heat treatment , on mechanical properties of quenched and tempered medium carbon Cr-Mo steel was studied .

采用TEM和ThermoCalc软件对718塑料模具钢组织中的碳化物类型及其在钢中的溶解过程进行了试验研究和模拟计算，指出正火后高温回火对小截面该钢模块具有一定的实用性。

The carbide type and its dissolution process in microstructure of 718 plastic die steel were analyzed by TEM analyses and performed modeling calculation with Thermo-Calc software . The results show that high temperature tempering after normalizing is practical to 718 die steel with small cross-section .

高温回火后组织为回火索氏体。

After high temperature tempering the microstructure transform into tempered Sorbite .

空冷后高温回火产生回火脆性。

However , a temper brittleness has appeared after high temper .

结构钢高温回火脆的内耗法研究

A study on high temperature temper brittleness by internal friction measurements

结果表明，亚温淬火能有效地抑制其高温回火脆性；

It was shown that intercritical quenching can effectively restrain .

两种中碳铬镍钼钢高温回火态的延性断裂韧度

Investigation of ductile fracture toughness for tow tempered Cr-Ni-Mo steels

调质大锻件高温回火冷却时的温度场与应力场分析

Temperature and Stress Analysis of Quenched and Tempered Heavy Forging in Temper Cooling

钢经过正火和高温回火后，在650℃下进行了持久强度和长期时效试验。

The creep rupture strength and long time aging were performed at 650 ℃ .

分析了快速调质工艺的高温回火机制。

The high temperature tempering mechanism due to quich induction heating has been analysed .

采用渗碳结合高温回火的方法，旨在强化二次硬化效果。

The effect of secondary hardening is strengthened by means of carburization with tempering .

增加抗高温回火稳定性；

The high tempering stability is improved ;

结果表明其组织分为：淬硬层、过渡层、高温回火区三层。淬硬层主要是由马氏体和残余奥氏体组成；

The results shown that the laser hardened case was divided into three parts according the microstructure characteristic .

同时，对高温回火和中温回火50钢进行了对称拉压试验，研究了热处理工艺对其超高周疲劳性能的影响。

The fatigue behavior of50 steel with mean stress is tested by these experiments of ultrasonic fatigue at20kHz .

18Cr2Ni4WA钢粒状贝氏体和粒状组织于高温回火过程中碳化物的析出规律

The Precipitated Rule of Carbides at High Tempering Process in Granular Bainite and Granular Structure of 18Cr_2Ni_4MA Steel

研究了碳素结构钢的高温回火脆性及其对显微组织和有关性能的影响；

The effect of high temperature temper brittleness on the microstructure and mechanical properties of carbonic steel was studied .

550℃高温回火三次，淬火后的表面硬度最高。

The surface hardness may reach to the highest with tempering temperature at 550 ℃ for three times after quenching .