韧性钢

The effect of flux basicity on the microstructures and toughness of SAW deposited metals on pipe line was investigated.

研究了焊剂碱度对管线钢埋弧焊熔敷金属显微组织和韧性的影响。

After the vanadium content in PD3 steel was more than 0.33%, vanadium carbides would precipitate a lot, and make the lamellar gap sizes of pearlite abnormally coarsen, it was beneficial to toughness of material.

当PD3钢中钒含量增加到0.33%时，碳化钒将大量析出，并使珠光体片间距反常粗化，对韧性不利。

The heat treatment method integrating isothermal annealing,quench hot and double tempering was made on the cold-work die steel XW-42 for its strengthening and toughening .

采用等温退火+高温淬火+二次回火工艺对冷作模具钢XW-42进行强韧化处理，提高了模具强度、塑性及韧性，此工艺应用于某型号表尺座的成形，模具使用寿命由原来的2400件提高到7300件，极大地降低了生产成本。

Low temperature properties of weld ; resistance measurement ; deep cooling treatment ; disperse educt ; brittle fracture at low temperature

本文通过多次实验，找出改善16Mn钢焊缝低温韧性的新工艺，即在淬火的基础上深冷处理(-196℃温度下的处理)。

With 3-D transient finite element analysis, the time evolution of dynamic stress intensity factor under different loading rates was obtained and the dynamic fracture toughness was determined by frac...

结合有限元三维动态模拟，得到了不同加载速率下试样动态应力强度因子的时间历程，并由实测的起裂时间确定两种钢的动态断裂韧性。

The effects of hydrogen and flakes on impact toughness and fatigue properties of a wheel steel have been investigated.

研究了车轮钢中白点和原子氢对冲击韧性和疲劳性能的影响。

The effect of different low tempering temperatures on the strength and toughness,wear resistance of carburized layers in 20CrMnMo and 17Cr2Ni2Mo steels was studied.

研究了不同低温回火温度对20CrMnMo钢和17Cr2Ni2Mo钢渗碳层强韧性和耐磨性的影响。

The ceramic-metal cladding material on the steel substrate is a new type of cladding material which has great development potential because of having functional dominances of both high hardness,excellent wear resistance of ceramics and high strength,toughness,good thermal conductivity of me...

制备出的金属陶瓷-钢覆层材料同时具有陶瓷材料硬度高、耐磨、耐腐蚀和金属钢强度高、韧性好、导热性好的性能优势，是一种很有发展潜力的高硬复合材料

Study an analysis according to what to rupturing the relation of tenacity and other reachs material crackle to develop a process, we see not hard be worth in Dn tall and below the case that is put in circumferential stress, the change of the finishing of high-speed steel and the deepness of surface of high-speed steel sclerosis with the small amount that contain carbon has important sense.

根据对断裂韧性和其它的关系及材料裂纹发展过程的研究分析，我们不难看出在dn值高且存在圆周应力的情况下，高速钢的表面处理和含碳量低的高速钢硬化表面深度的变化具有重要的意义。

Two typical case are studied. The results show that the shear wall as well as the steel bracing is the most economical restrength method, and the wing wall is affected by the failure mode and ductility index. The steel pate method is the last choice because of the highest cost.

本研究利用两个实际案例，经由耐震能力提升之效能比较可得知，剪力墙和钢斜撑是最具经济效益的补强方式，而翼墙会随破坏模式和韧性指标的改变而影响经济效益，包覆钢钣则因单价成本过高，经济效益最差。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。