低温回火

并论述工艺参数的确定和讨论了取消低温回火工序的可能性。

The definition of the technical parameters and the possibility to omit the low tempering have been discussed also .

低温回火对埃林瓦合金弹性模量E及（△E/E）-T曲线的影响

Effects of Low Temperature Tempering on Young 's Modulus E and △ E / E-T Curve of Elinvar Alloy

本文还研究了Si和Mn对Si-Mn-Mo-V钢低温回火脆性（350℃脆性）的影响。

The effects of si and Mn on low temperature tempered embrittlement ( LT-TE ), or 350 ℃ - embrittlement as it called , of Si-Mn-Mo-V steels have been a-Iso studied in this work .

研究了热轧、低温回火状态1250MPa级新型贝氏体耐磨钢板的组织和力学性能，测试了埋弧焊和CO2焊焊接接头的力学和机械加工性能。

The microstructure and mechanical properties of 1 250 MPa grade new type bainite wear resistance steel plate were studied as hot rolling and low temperature tempering . The wear resistant plate mechanical properties of weld joint and mechanical working properties were tested .

对试验结果进行了表面质量、变形、硬度、金相和剥层分析后，优化出工艺参数，即在860℃下共渗2.5h后直接淬火，再于140~150℃下低温回火1.5h。

After analyzing surface quality , deformation , hardness , metallic phase and bread-crust inspection , optimizing technological parameter-quenching after carbonitriding at 860 ℃ for 2.5 hours and tempering at 140150 ℃ for 1.5 hours can be found .

低温回火态新型贝氏体钢的组织性能

Microstructure and Properties of New Type Bainitic Steels at Low Temperature Tempering

钢的晶界马氏体形成与低温回火脆性

Grain Boundary Martensite Formation and Tempering Brittleness at Low Temperature of Steels

钢中马氏体低温回火过程的内耗法研究

Study on the internal friction method of low temperature tempering processing of martensite in steel

发展无碳化物贝/马组织和富碳残奥薄膜以做到中低温回火合结钢的强韧化优良配合。

Developing " carbide free bainite / martensite microstructure with retained austenite film " technique is introduced .

对于大尺寸零件，宜采用淬火+低温回火或中温回火处理。

For machine parts large in size , a low to medium temperature tempering after quenching is suitable .

再经200℃低温回火，钢的强韧性配合最佳。

After tempering at 200 ℃, the strength and toughness of the steel is matched to the best level .

分析了多冲疲劳裂纹扩展的行为，讨论了正火低温回火提高冲击疲劳的原因。

The reason of the increase of the impact fatigue life at normalizing and low temperature tempering was discussed .

热轧、低温回火态1250MPa级新型贝氏体耐磨钢板的组织和性能

Microstructure and Properties of 1 250 MPa Grade New Type Bainite Wear-resistant Steel Plate as Hot Rolled and Low Temperature Tempered

经低温回火或正火回火处理，铸态显微组织获得了改善，提高了冲击韧度。

The casting microstructure can be improved and its impact toughness can be increased by low temperature tempering or normalizing and tempering .

采用离心铸造+低温回火工艺并通过合金成分调整和工艺控制，生产出“改进型”贝氏体球铁轧辊。

The improved-type bainite ductile cast iron roll was developed by centrifugal casting and low temperature tempering technology and adjustment alloy composition .

研究发现，将直接淬火工艺与低温回火工艺相结合能够进一步提高直接淬火钢的力学性能。

The results indicated that the mechanical properties of direct-quenched steels could be further improved by combining the direct quenching technology with low temperature tempering process .

等温淬火试样的干滑动磨损耐磨性高于低温回火的试样，且耐磨性随等温转变温度降低而提高。

The dry sliding wear resistance of the austempered samples is much higher than that of the low-temperature tempered sample , and increases with isothermal transformation temperature decreasing .

结果表明，试验钢的最佳淬火温度为850℃，试验钢经不同温度淬火、低温回火后，钢的硬度变化并不显著，在50~53HRC之间；

The results show that the best quenching temperature is850 ℃, the hardness is not significantly changed ( 50 ~ 53 HRC ) through different quenching and tempering temperature .

为探讨较高的冲击力对中碳合金钢的冲击腐蚀磨损规律，对中碳合金钢经900℃淬火、200℃低温回火得到的复相组织的磨损特性和机理进行了试验研究。

Wear characteristics and mechanisms of a medium carbon alloy steel after quenching at900 ℃ and low temperature tempering at200 ℃ were investigated under the condition of impact corrosive wear .

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 .

而淬火、低温回火态下，则复合添加钼、钨的烧结钢的耐磨性能最好，这是因为热处理态下添加钼、钨的烧结钢的硬度最高。

The sintered steel quenched and low temperature tempered mixed by Mo , W that was the best on the wear resistance , because of the rigidity of the steel was the highest .

结果表明，淬火条件一定时，选择250～300℃低温回火，可以获得马氏体、贝氏体和残留奥氏体混合组织，在保证一定韧性的基础上获得较高的硬度。

The results show that after 250 ~ 300 ℃ tempering treatment , the microstructure of the steel is martensite 、 bainite and retained austenite . The higher hardness is obtained with proper toughness .

本工作中还研究了奥氏体化保温时间，含碳量和低温回火脆性对超高强度钢低温断裂行为的影响。

The influences of the holding time during austenization , the carbon content and the temper embrittlement on the fracture behaviour of ultra high-strength steels at low temperatures were investigated in this paper too .

低合金马氏体耐磨钢的传统热处理工艺为淬火后低温回火，得到回火马氏体组织，具有良好的强度、硬度和韧性的配合。

Conventional heat treatment of low alloy martensitic wear-resistant steel is quenching and low-temperature tempering process , from which it can get tempered martensite structure which has a good combination of strength and toughness .

研究了恒定载荷和三种频率的动载荷条件下，经淬火及低温回火的两种低碳马氏体钢在25℃，3.5%NaCl水溶液中的裂纹扩展行为。

The crack growth behavior is investigated for low-carbon martensitic steels quenched and tempered at low temperature , under static loading and cyclic loading with three frequencies in 3.5 % NaCl solution at 25 ℃ .

焊后300℃低温回火处理和900℃正火、300℃回火处理可显著改善焊接接头热影响区的冲击韧性。

After welding , the joints are treated by low temperature tempering at 300 ℃ and normalizing at 900 ℃ . The tempering treatment can improve the impact toughness in heat-influenced area of the welded joints .

高温回火的试料比低温回火的试料耐磨。在湿式磨损的场合下（78%砂+22%水），15%Cr和26.5%Cr的试料摩耗之比差别不大。

While under wet-wearing ( 78 % sand , 22 % water ) the wear-out ratios of 15 % Cr and 26.5 % Cr specimens are both small and there is rather little difference between them .

作者在含磨粒的油润滑条件下对快速镍刷镀层的摩擦磨损性能与45~钢（淬火+低温回火）的进行了对比试验研究。

The tribological properties and wear behaviour of fast brush plated nickel layer were studied as compared with those of 45 steel ( quenching and tempering ) on Model MM-200 wear tester under oil lubrication containing Al2O3 particles .

结果表明，经低温回火，马氏体－贝氏体复相组织中含15%～25%下贝氏体时，钢的强韧性及模具使用寿命显著提高。

The result shows that in case of bainite content of ( M + B ) duel phase structure was about 15 % ~ 25 % the strengthening and toughening and the service life of die is markedly increased .

介绍冷轧工作辊经50/250Hz双频感应淬火后低温回火工艺与硬度的关系，揭示了二者之间的规律，并用回归方程计算方法阐明回火工艺与硬度之间存在强负线性相关关系

The connection between low temperature tempering parameters and hardness of the cold rolling work rollers after 50 / 250 Hz double frequency induction quenching is introduced A strong negative linear correlativity between the tempering parameters and hardness is shown by regressive equation computation