本文还提出了K_（ISCC）的上下限原理，据此原理，对某些低强高韧性钢可以用超载法确定K_（ISCC）的范围值。
A principle of upper and lower bound for KISCC was also presented, by this principle a range value of KISCC for some low-strength and high-toughness steels can be determined…
然而现在，一种新型的钢已经被开发出来，它可以在更低的温度下抵抗断裂，同时保持其强度和韧性，而不需要昂贵的添加剂。
Now, though, a novel type of steel has been developed that resists fractures at much lower temperatures, while retaining its strength and toughness—without the need for expensive additives.
由此产生的钢似乎达到了强度和韧性的结合，这与合金含量非常高因而非常昂贵的现代钢相当。
The resulting steel appears to achieve a combination of strength and toughness that is comparable to that of modern steels that are very rich in alloy content and, therefore, very expensive.
采用焊接热模拟技术和显微分析方法，研究了回火焊道热处理对X80级管线钢焊接热影响区韧性的影响规律。
The effects of tempering weld-pass treatment on toughness of HAZ of X80 pipeline steel were studied by the technique of welding thermal simulation and the method of microscope analysis.
而沸腾钢从冶炼直至钢模中、韧性、硅铁或铝来脱氧。
The boiling steel from smelting until the steel mold, toughness, ferrosilicon or aluminum deoxidation.
作为合金元素加入钢中可使钢合金化，增加钢的强度、硬度、延展性、韧性和耐磨性等。
As an alloy element, silicon manganese can alloy the steel, strengthen the intensity, hardness, malleability toughness and wearability of the steel.
使钢产生热脆性，降低钢的延展性和韧性，在锻造和轧制时形成裂纹。
Causes the steel to produce the hot brittleness, reduces the steel the ductility and the toughness, when forging and rolling crack.
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。
The effect of flux basicity on the microstructures and toughness of SAW deposited metals on pipe line was investigated.
通过铸造表面合金化和复合变质处理，使中锰奥氏体钢的强度、韧性和表面硬度显著提高。
The strength, toughness and surface hardness of medium Manganese austenitic steel have been increased greatly by casting surface alloying and complex modification.
韧性是管线钢最重要的性能之一。
Toughness is one of important properties for pipeline steel.
研究了试样类型、试样厚度、比例试样尺寸及切口尖度等因素对普碳轨钢断裂韧性的影响。
The effect of specimen type, thickness, dimension ratio, and notch sharpness on fracture toughness of a carbon rail steel was examined.
论述了超细晶粒钢的超细晶粒及高强度与高韧性良好匹配的特点。
With the features of ultrafine grain, fair matching of high strength and high toughness in the ultrafine grain steel.
钢中夹杂物对冲击韧性不利。
研究了X80级管线钢焊接热影响区不同区域的韧性分布。
Toughness distributions of different area on HAZ of grade X80 pipeline steel have been studied.
本文利用示波冲击试验，对船用921A钢动态断裂韧性的测试方法进行了研究。
In this paper, the dynamic fracture toughness measuring method for 921a shipbuilding steel is studied by instrumented Charpy impact test.
长时间扩散退火可有效地提高粉末锻造钢的韧性。
Toughness of powder forging steel can be increased efficiently by diffusion annealing in longer time.
通过调整合金成份和改变热处理制度试验，有效地提高了低温钢的低温韧性。
The low temperature toughness of low temperature steel can be improved effectively by means of adjusting alloy ingredients and modifying heat-treatment regime.
随着这些性能的降低，拉伸强度也降低而钢的延展性和韧性则会提高。
As these properties are reduced there is also a decrease in tensile strength and an increase in the ductility and toughness of the steel.
研究了正火处理对FAS390Q桥壳钢显微组织、强度、冲击韧性和韧脆转变温度的影响。
The effect of normalizing on microstructure, strength, impact toughness and ductile-brittle transition temperature of FAS390Q axle housing steel was studied.
其中针状铁素体之间细小的马氏体的存在与数量对钢的抗拉强度和低温冲击韧性起关键作用。
The existence and amount of small isolated martensite between the acicular ferrite play an important role in determining the tensile strength and low temperature impact toughness of the steels.
提高微合金非调质钢的强度需要改善其韧性。
Toughness of microalloyed forging steel should be improved with the increase of strength.
通过硬度试验、冲击试验、断口扫描和金相组织观察，研究了T92钢焊接接头的韧性与组织的关系。
Through hardness test, impacting test, SEM of failure surface and microstructure observation, the relationship between the toughness and its microstructure of welding joint of T92 steel was studied.
通过晶内铁素体的析出细化了晶粒，提高了钢的强度与韧性。
The existence of intragranular ferrite can refine austenite grains and enhance the strength and toughness of the steel.
试验表明，采用合适的冶炼工艺，大型转炉加炉外精炼能够批量生产超低硫低磷钻杆用钢，使钻杆获得高横向冲击韧性。
Test results show that such steel can be mass produced with technology of a large converter plus the secondary refining, which can insure drill pipes for the transverse impact toughness.
通过力学参数测量和微观观察研究了初始损伤对钢的延性起裂韧性影响。
By using measurement of mechanical parameters and microscopic observation, the effect of initial damage on the ductile fracture initiation toughness of steel was investigated experimentally.
指出厚规格高韧性管线钢的生产难点在于热连轧。
Difficulties in manufacturing heavy gauge pipeline steel with high toughness lie in the process of hot tandem rolling.
模铸转连铸后，减轻了成分偏析，提高了钢的韧性。
After changing from mould casting into continuous casting, the composition segregation decreases and the toughness steel increases.
通过加速冷却，可以在不影响强度的前提下，降低碳当量以改善钢的韧性和焊接性。
Carbon content can be reduced to improve toughness without loss in strength by strictly controlling accelerated cooling processes.
通过加速冷却，可以在不影响强度的前提下，降低碳当量以改善钢的韧性和焊接性。
Carbon content can be reduced to improve toughness without loss in strength by strictly controlling accelerated cooling processes.
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