韧性钢

IT ALSO HAS THE BEST EFECT TO IMPROVE THE PLASTICITY, IMPACT DUCTILITY AND FLUIDITY OF STEEL.

同时对改善钢的性能，提高钢的塑性，冲击韧性和流动性都有良好的促进作用。

Toughness and susceptibility to hydrogen embrittlement of the steel could be improved as increasing tempering temperature below 370℃.

由此可以通过提高回火温度改善钢的韧性，降低钢的氢脆敏感性。

Two types of low carbon weathering steel with different Mn content were produced in vacuum induction furnace.

在真空感应炉冶炼了2炉不同锰质量分数的低碳耐候钢，利用热模拟机和金相显微镜分析了其组织特征和相变规律，并通过室温拉伸、冲击实验且结合断口分析表征了实验钢的强韧性。

The results show that quenched steel treated at 1000~1040℃ is more reasonable, quenched at 1030℃, tempered at 300~350℃, the microstructures are small uniform martensite, which has high strength and certain toughness; quenched at 1030℃, tempered at 600~650℃, The microstructure of the steel is tempered sorbite which has good mechanical properties.

结果表明：1Cr16Ni4Nb钢在1000~1040℃淬火较合理，在1030℃淬火、300~350℃回火时，组织为均匀细小的回火马氏体，其具有较高的强度和一定的韧性；在1030℃淬火、600~650℃回火时，1Cr16Ni4Nb钢的组织为回火索氏体，其具有较高的综合力学性能。

Therefore, the mechanical properties especially the toughness of TWIP steels can be improved by way of controlling its heat treatment process to increase the number of CSL boundaries in original structure.

CSL晶界对材料的抗晶间腐蚀、断裂和蠕变强度的提高均有有益的作用，因此，通过控制TWIP钢的热处理工艺来提高原始组织中特殊晶界的含量，可以提高TWIP钢的强韧性。

What is summarized in this paper is the present situation, current questions and prospects for high vanadium high speed steel.

0前言近20年研究发现，高钒高速钢不仅有很高的硬度和相当的韧性，而且有优良的耐磨性，因此作为新一代耐磨材料，高钒高速钢备受关注[1]。

The higher low temperature toughness of TTS is related to the formation of intragranular acicular ferrite in the CGHAZ.

线能量大于50 kJ/cm的大热输入条件下， Ti处理钢模拟粗晶区的低温韧性明显高于Al处理钢。

Reducing self-weight and improving toughness is always a subject that modifying the common concrete since it is come into being , the steel fiber reinforced concrete pathed the way for improving the toughness of it ,while the lightweight concrete solved the problem to the heavy dead weight.

混凝土自从问世以来，减轻自重、提高韧性一直是对其改性的课题，钢纤维混凝土为改善韧性开辟了道路，而轻骨料混凝土则解决了其自重大的问题。

Through a series of quenching, tempering, tensile testing, low-temperature impact test and metallographic analysis, we ultimately came to the following conclusions:(1) low-carbon alloyed steel 20CrMn2NiMoV quenching at 870℃ and tempering at 200℃, whose structure contains tempered dislocation lath martensite and few small bainite under mixed, has the best obdurability;(2) Carbon Steel 45CrMn2NiMoV quenching at 850℃ and tempering at 620℃, whose structure is sorbitic, has a performance less than that of low-carbon Alloyed steel, but it can also meet the basic design requirements.(3) Mn can substitute for the role of Ni within limited extent.

通过一系列淬火、回火、拉伸试验、低温冲击试验以及金相分析，最终得出以下主要结论：（1）低碳合金钢20CrMn2NiMoV经870℃淬火+200℃回火，得到回火位错型板条马氏体+少量细小下贝氏体的混合组织，具有最佳的强韧性配合；（2）中碳合金钢45CrMn2NiMoV经850℃淬火+620℃回火，得到回火索氏体组织，综合性能虽然不及低碳合金钢，但也能基本满足设计要求；（3）Mn在一定程度上能够替代Ni的作用，适量的Mn和Ni相互配合可以得到最佳的低温韧性，因此&以Mn代Ni&是低温钢材料研究开发中一条可行的适合我国资源状况的合金化思路。

The presence of austenite at any 10% would causeloss of strength of both steels about 10 kg/mm~2, however, their toughness mightbe actually improved by these softer austenites formed along the boundaries oflath martensite.

回火奥氏体的存在使强度下降，估计10％的奥氏体使强度损失约10kg/mm~2。但较软的回火奥氏体沿板条状马氏体边界形成改善钢的韧性，使冲击韧性a_K提高。

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。