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- The fractograph exhibited typical ductile dimple fracture pattern. 断裂形式呈韧性断裂,断口以韧窝为主。
- The fractography of this steel changes from dimple fracture into cleavage fracture and inter-granular rapture. 该不锈钢的夏氏V型缺口(CharpyV-notch)冲击试样断口形貌随着时效时间的延长由韧窝断裂为主向准解理断裂和沿晶断裂为主变化。
- The fractography showed brittle fracture in high SiC layer and dimple fracture in the matrix of low SiC layer. 第5章研究了多层梯度复合材料的疲劳裂纹扩展行为。 研究表明,当疲劳裂纹从低SIC层向高SIC层扩展时,在相邻两层过渡区会发生裂纹扩展延滞。
- The results show that the dimple fracture process of the matrix aluminum alloy is well simulated, with large amount of plastic deformation. 其结果表明;用这种非均匀模型能很好地仿真铝基体在大量塑性变形之后所发生的韧窝破坏过程.
- The fractography of this alloy is changed from dimple fracture into cleavage fracture and inter-granular rapture with the extension of aging time. 另外,该不锈钢的CVN冲击试样断口形貌随着时效时间的延长由韧性断裂机制的韧窝断裂为主向脆性断裂机制的准解理断裂和穿晶断裂为主变化。
- The results show that the spherical particle is easier to compress than the cylindrical one and it"s good for the dimple fracture of the matrix. 球形颗粒与柱形颗粒相比,其在单轴压缩载荷的条件下,复合材料的压缩显得更容易,其更不易被破坏。
- The raw hot rolling stick has plastic dimple fracture surface and aging-treated specimens have plastic and brittle mixed fracture surface but brittle is main. 热轧态拉伸试样断口呈韧窝状塑性断口,时效后拉伸试样断口为以脆性为主的韧脆混合断口。
- The fracture morphology of matrix metal is dimple fracture and tear dimple, however, that of the cemented carbide is brittle cleavage fracture and intergranular fracture. 在冲击载荷作用下 ;基体金属断裂表现为高塑性的韧窝断裂 ;且存在一定撕裂棱 ;而硬质合金的断裂为脆性穿晶解理断裂或沿晶断裂 .
- High manganese steels undergo a ductile to brittle transition at low temperature, which is accompanied by a change in the fracture mechanism from dimple fracture to intergranular fracture. 高锰奥氏体钢随温度降低其断裂机制由韧窝状断裂转变到晶界断裂。
- The results showed that attaked surface had similar appearance like impact fractograph primary failure mechanism of cavitation damage was mixed mode of quasi cleavage and dimple fracture. 观察结果表明 ,其剥落形貌与冲击断口形貌相似 ,剥落机制主要是韧窝和准解理的混合型。
- The results showed that strength, ductility and fracture toughness were lowered caused by hydrogen attack for Cr-Mo steel. The fracture mechanism was changed from dimple fracture surface to embri-ttlement by hydrogen attack. 结果表明:Cr-Mo钢已经发生了氢腐蚀;氢蚀使Cr-Mo钢强度、塑性和断裂韧性均有所降低;也使断裂机制由韧窝型转变为解理脆性.
- The feature of the fracture surface was examined by SEM and three kinds of fracture mechanisms were determined as follows; 1. quasi-shear fracture; 2. dimple fracture, and 3. quasi-cleavege. 通过扫描电镜对断口进行分析,确定了三种基本断裂机制:(1)准切变,(2)韧窝;
- Based on some advances by means of meso-mechanics of ductile fracture of metals, two failure models of steels used in pressure vessel is proposed: one is dimple fracture, and another is shear-slip fracture. 结合细观力学在金属韧性材料断裂中的研究成果 ,提出压力容器用钢的断裂模式有两种 :韧窝型断裂模式和剪切型断裂模式 ;
- By way of suitable heat treatment, the tensile fracture morphology changes from brittle intercrystalline fracture to dimple fracture, so the strength and ductility of the alloy is increased. 采用适当的热处理工艺可使合金强韧化 ,拉伸断口由脆性的沿晶断裂变为韧窝状断裂。
- 8.The fractograph exhibited typical ductile dimple fracture pattern. 断裂形式呈韧性断裂,断口以韧窝为主。
- Perhaps there is a fracture in the water pipe. 也许水管有裂缝了。
- The fracture of his left leg is very serious. 他的左腿骨折情况很严重。
- The fracture caused him intense pain. 骨折给他造成了剧烈的疼痛。
- the raw crossed-rolled tube have plastic dimple fracture surface and aging treat tube have plastic and brittle mixed fracture surface. 管材拉伸试样断口分析发现,斜轧态和固溶状态表现为布满韧窝的塑性断口,时效后为韧脆混合断口。
- The chief character of fracture is fatigue striation and dimple. 断口分析表明,合金低周疲劳断口的主要特征是平行的条纹及韧窝。