沉淀强化

稀土金属兼具高的固溶强化参数和沉淀强化参数，是强化Au与Au合金的重要合金元素。

The rare-earths have both parameters of high solid solution strengthening and high precipitation strengthening .

Nb、V、Ti三种元素的复合加入所产生的强韧化作用，是晶粒细化、沉淀强化以及固溶强化等综合作用的结果。

The effects to improve the strength and toughness by adding the three elements are a comprehensive results of the grain refinement , precipitation strengthening and solid solution strengthening .

高V钢中V（C，N）沉淀强化作用的研究

Precipitation Harding of V ( C , N ) in High Vanadium Steel s

提高V含量使细小弥散的碳化钒在晶内析出，产生明显的沉淀强化效果。

V strengthened welds exhibited higher toughness than that strengthened with C in the same strengthening effect .

4169高温合金是一种添加了Nb的沉淀强化型镍-铬-铁基合金。

The superalloy 4169 is a niobium-added precipitation hardened Nickel-chromium-iron based alloy .

合金中过饱和的Cr原子对材料强度的影响是通过沉淀强化和细晶强化来实现的。

Over-saturated Cr atoms are the dominant factors accounting for strengthen by precipitation and grain refinement strengthening . 4 .

钢中添加Nitrovan12合金，充分利用了廉价的氮元素，促进了V（C，N）的析出，提高了V的沉淀强化效果。

The nitrogen promotes precipitation of V ( C , N ) in V-bearing steel and improves the effect of Vanadium precipitation strengthening .

在含钒钢筋中增氮，促进了V（C，N）的析出，显著提高了V的沉淀强化效果，因此，可使V的用量节约40%以上。

Enhanced-nitrogen in V-containing rebars promotes precipitation of fine V ( C , N ) particles , and improves markedly precipitation strengthening effectiveness of vanadium .

利用高温应力法研究Ti含量和冷却速度对中碳微合金化钢沉淀强化效应的影响

Influence of Ti content and cooling rate on precipitation strengthening effect in medium Mn-V microalloyed steels by a high temperature stress method

计算了显微组织强化和位错强化值，分析了析出相VC的沉淀强化作用，指出上述3个因素使钢丝具有较高的强度。

Both the strengthening value of microstructure and dislocation are calculated . The effect of precipitate consolidation on VC is analysed .

同时，探讨了Ag在合金沉淀强化中的作用与晶界特性机理。

The function in precipitation strength and the boundary cha & raeterstic are also studied with Ag added in the alloy .

合金有显著的时效硬化特性，其强化机制主要是沉淀强化，合金的主要强化相为GP区和η′过渡相。合金的断裂形式为微孔聚集型韧性断裂。

The main strengthening mechanism of the alloy was precipitation hardening and the strengthening phase was GP zone and η′( MgZn 2 ) .

非调质钢中增氮，改变了钒在相间的分布，促进V（C，N）析出，使析出相的颗粒尺寸明显减小，从而增强了钒的沉淀强化作用，大幅度提高钢的强度。

An enhanced nitrogen content promotes the precipitating of V ( C , N ) and decreases the particles size of V ( C , N ) precipitates , hence increases precipitation strengthening effect of vanadium .

Nb可有效细化变形诱导铁素体晶粒尺寸，V的析出物对超细晶组织的沉淀强化作用十分显著。

Grain size of ferrite induced by deformation can be refined by microalloyed element Nb . Precipitation of V ( C , N ) improve strength effectively in ultrafine steels .

此外，修正了NbC粒子沉淀强化屈服强度增量公式，试验结果与公式计算符合较好。

Moreover , an improvement of the formula for the yield strength increment by the platelike NbC precipitates was also made .

Ti含量增加改变了MC相的粒度分布，小尺寸粒子的体积分数显著增加，增强了沉淀强化的效果。

The size distribution of MC phase changed with increasing titanium content . The obvious increase in volume fraction of small scale particles heightened the yield strength of the steel through precipitation strengthening .

结果表明在等温处理条件下沉淀强化是Nb-Ti钢重要的强化机制。

It was showed that precipitation is the significant strengthening factor in Nb-Ti steel when isothermally treated .

并估算了Ti（CN）的沉淀强化效应，它也随冷却速率的大小而变化。

The effect of Ti ( CN ) precipitation strengthening , σ p ( N / mm2 ), has been calculated . It was found that the σ p varies with cooling rate too .

由于Cr和Zr的复合加入除了起到固溶强化的效应外，还起到沉淀强化的作用，所以Cr-Zr-Cu合金的屈服及抗拉强度都要高于Ag-Cu合金。

As the compound by adding Cr and Zr in addition to play solid solution strengthening effect , but also play a role in precipitation strengthening .

在细晶强化和多种镁金属间化合物沉淀强化的复合作用下，Al-Si和Al-Cu合金涂层均展示优异的耐磨蚀性。

With the composite action of the fine-grained and precipitation strengthening of multiple Mg intermetallic compounds , Al-Si and Al-Cu eutectic coatings exhibit better wear and corrosion resistance .

结果表明：微量Cr能提高CuZn合金硬度和再结晶温度，Cr对合金性能的影响是通过沉淀强化来实现的，快速热轧淬火具有保留加工强化的效果，形变热处理还产生了组织强化。

The results show that trace Cr can enhance Cu Zn alloy hardness and recrystallized temperature in the way of precipitation hardening . Rapid heat rolling and quenching can hold the effects of working hardening , and thermomechanical treatment can develop structure hardening as well .

当正火加热温度低于临界粗化温度TC时，含Nb微合金钢和Nb-Ti复合微合金钢的强度主要来自细晶强化，沉淀强化效应很小。

But when the normalizing temperature is below Tc which is the critical temperature for grains to coarsen , grain refinement plays a important part in the strengthening of Nb steel and Nb-Ti steel , and the precipitation contributes little .

对V-N微合金化提高低合金结构钢强韧性的机理进行了研究。结果表明，所设计16MnV（N）钢力学性能提高的原因是组织细化和沉淀强化。

The mechanism of V-N microalloying improving the strengthening and toughening of low-alloy structural steel shows that the enhancement in mechanical properties of 16MnV ( N ) is mainly due to microstructure refining and precipitation strengthening .

计算结果表明，CSP热轧低碳钢板卷细晶强化和沉淀强化占59%，常规工艺该项占55%。

Calculated results show that the contributions of fine grain strengthening and precipitation strengthening of low carbon steel strip produced by CSP process make up 59 % of all strengthening factors , while that by conventional process make up 55 % of all factors .

500MPa超细晶钢的强化方式应以细晶强化为主，配合相变强化和沉淀强化，显微组织应为在超细（3～5μm）的铁素体基体上分布适量的贝氏体。

The strengthening mechanisms for 500 MPa ultra-fine grain steels should be grain refinement strengthening , transformation strengthening and precipitation strengthening .

本文讨论了二元Au合金系中富Au端相图特征，合金元素在Au合金中分布及强化与脆化倾向性，分析了合金元素对Au的固溶强化参数和沉淀强化参数。

The characteristic of gold-rich phase diagrams in binary Au alloy systems , the tendency of distribution and of strengthening of alloying elements in and to gold were summarized in present paper . The parameters of solid solution strengthening and precipitation strengthening of alloying elements to gold were analyzed .

指出，由于超塑性变形导致PMS钢的位错强化、沉淀强化和细晶强化，使其在超塑性精密成形的同时能有效地提高强度。

The results point out that , as the superplastic deformation results in dislocation strengthening , precipitation strengthening and the strengthening caused by grain refinement of PMS steel , the strength of PMS steel will be enhanced during superplastic precision forming .

Incoloy903合金系沉淀强化型Ni-Fe-Co基合金，它具有低的热膨胀系数，几乎恒定的弹性模量和较高的强度。

Incoloy alloy 903 is a precipitation hardened Ni-Fe-Co alloy with outstanding characteristics : low coefficient of thermal expansion , nearly constant modulus of elasticity and higher strength .

根据奥氏体中第二相的固溶度积理论、Ostwald熟化理论、晶粒尺寸控制理论和沉淀强化理论，对薄板坯连铸连轧时钢中主要夹杂物在奥氏体中形成的可能性及其尺寸的控制进行了理论分析计算。

According to the solubility product theory of second phase in austenite , Ostward ripening theory , grain size control theory and precipitation strengthening theory , the probability for formation of inclusions in austenite and the inclusion size control have been theoretically analyzed and calculated .

添加0.02%的铌，并通过合适的轧制工艺，可以改善细晶强化和沉淀强化的效果，使屈服强度达到520MPa以上，抗拉强度达到620MPa以上。

The yield strength and tensile strength could be increased to more than 520 MPa and 620 MPa , respectively , through addition of 0.02 % Nb and suitable TMCP process refinement strengthening was enhanced and precipitation strengthening was also introduced .