对经退火热处理的FeCo软磁合金带材的力学性能进行了研究，同时对比了1J22合金和高强度FeCo合金冷轧带材在不同热处理温度下退火后的组织变化。结果发现：随着退火温度的上升，两种合金的强度均下降、晶粒的粒径均变大；在850℃时，1J22合金晶粒已经明显粗化，高强度FeCo合金晶粒有略微长大，但晶粒较均匀；在880℃时，两种合金晶粒均明显粗化，且不均匀。

The mechanical properties of cold-rolling belts of FeCo soft magnetic alloys were investigated . The FeCo alloys as a benchmark compared to 1J22 alloys were annealed at different temperature for micro-structure observation .It was found that the strength of the alloys decreases with the rising temperature , , and average grain size vice versa .At temperature of 850℃ ,the grains of 1J22 alloys have become coarse grains and the grains of high strength FeCo alloy grow slightly .At temperature of 880℃ ,the grains of two alloys both obviously was evolved into coarse and asymmetry grains .

环件在热轧过程中的微观组织演变是影响其力学性能的重要因素。采用模拟和试验的方法，研究环件从棒料下料到轧制全过程中微观组织演变规律。基于有限元分析软件Simufact建立环件从棒料下料到轧制全过程的三维有限元模型，研究棒料初始温度、棒料高径比以及镦粗速度对成形环件晶粒和动态再结晶的影响规律，并通过金相显微试验观察晶粒和珠光体形貌。研究表明，在整个过程中，环件的晶粒大小和珠光体片层间距逐渐减小；当棒料温度增加，成形环件的平均动态再结晶体积分数和晶粒尺寸增加，动态再结晶体积分数和晶粒尺寸分布越均匀；当棒料高径比、镦粗速度增加，成形环件的平均动态再结晶体积分数增加，平均晶粒尺寸减小，动态再结晶体积分数和晶粒尺寸分布越均匀。研究结果对于建立环件精密热轧工程理论和提高热轧环件组织性能具有重要的理论价值和实际意义。

Microstructure evolution in hot ring rolling is an important factor affecting its mechanical behaviors. The microstructure evolution during hot ring rolling is studied using the simulation and experimental methods. A 3D coupled thermo-mechanical finite element(FE) model of the whole hot ring rolling process is built using the Simufact software. The effects of the initial temperature, height-diameter ratio and upsetting speed of the initial billet on grain size and dynamic recrystallization of hot rolled rings are investigated and the profile of grain and pearlite are observed. The results show that the grain size and pearlite lamellar spacing of the workpiece gradually decrease in the whole process. With increasing the initial temperature, the average volume fraction of dynamic recrystallization and grain size increase, and the uniformity of dynamic recrystallization and grain size improve. With increasing height-diameter ratio and upsetting speed, the average volume fraction of dynami

研究了TB8钛合金冷轧板材在不同热处理温度和不同保温时间下的晶粒长大行为。结果表明：TB8钛合金冷轧板材在820～880℃的温度范围内不存在晶粒急剧粗化的现象,可以在此区间内的温度下对其进行热处理,保温时间根据温度的不同可在30～120 min范围内选择。此外,借助Beck方程和Arrhenius方程分别计算得到该合金的晶粒生长指数（n）为0.25～0.35,β晶粒长大激活能（Q）为273.23 k J/mol。

The grain growth behavior of TB8 titanium alloy plate was investigated under different heating temperature and holding time.The results show that the cold-rolled plate of TB8 titanium alloy can be heat treated in the range of 820 ℃ to 880 ℃.The grain rapid coarsening phenomenon does not exist in the above temperature range, and the holding time can be chosen in the range of 30 min to 120 min with different temperatures.Grain growth exponent (0.25~0.35) and grain growth activation (273.23 kJ/mol) are also calculated by Beck and Arrhenius equations.

在实验室模拟CSP工艺条件下制备了取向硅钢,研究了二次冷轧中间退火工艺对组织和织构的影响。结果表明,中间退火温度对取向硅钢脱碳,高温退火组织及织构均产生明显影响。经940℃中间退火后,取向硅钢脱碳再结晶晶粒较850℃中间退火的多,且再经高温退火处理后,晶粒粗化,最大晶粒尺寸达4.8 mm;高斯织构组分密度达27.00,较850℃中间退火试样高。

Grain-oriented silicon steel was prepared by simulated CSP technology in laboratory .Effects of secondary cold-rolled intermediate annealing on microstructure and texture were studied .The results show that intermediate annealing has obvious effects on the microstructure and texture of the steels after decarburization annealing and high temperature annealing . After intermediate annealing at 940 ℃, recrystallized grain of decarburization annealed steel is more than that of intermediate annealed at 850 ℃, and then annealed at high temperature, the recrystallized grain size is coarsed and the maximum grain size is about 4.8 mm, Goss texture strength is 27.00 that higher than that of intermediate annealed at 850 ℃.

采用熔焊填充+搅拌摩擦补焊复合工艺成功进行了搅拌摩擦焊缝匙孔型缺陷的修补,焊后对补焊接头的微观组织和力学性能进行了分析。结果表明,焊核区呈细小的再结晶等轴晶粒,热机影响区发生粗化长大,逐渐丧失了原始母材轧制晶粒边界形貌,并残留熔焊柱状晶或树枝状晶粒。第二相析出物粗化长大,呈网状结构分布于热机影响区域。热影响区/热机影响区是整个补焊接头的薄弱环节,拉伸试样亦断裂在该区域。补焊接头断口呈现出韧性断裂与铸态组织脆性断裂的混合断口形貌。

The composite process of fusion ifll-ing + friction stir repaired welding has been successfully used to repair the keyhole defect, and the microstructure and mechanical properties of the repaired joint have been analyzed. The microstructure of the TMAZ coarsens and grows up with the boundary morphology of the original parent metal gradually disappearing, and even there is part of columnar or dendrite crystals from the fusion filling process existing in the TMAZ. SEM observation shows that the precipitated phase in the TMAZ also coarsens and grows up with the network structure distributed. The re-sults of microhardness and tensile test present the inhomo-geneous mechanical behavior of the repaired joint. TMAZ is the weak link of the repaired joint, and the tensile speci-men also fractures in this zone. The fracture morphology shows the ductile fracture in the nugget zone and brittle fracture in the TMAZ.