金相分析

A fractography analysis can reveal important information about failure mode, including the type of deformation that occurred and patterns of fracture. im体育APP’s team of engaged experts provides fractography and materials test methods for 失效分析 to determine the root cause of material, 产品, 工程上的失败.

断口学是什么? 

Fractography is a partial form of 失效分析 that deals with crack growth and fracture characteristics of metals, 组件, 工程结构. Fractography is categorized into four major modes: fatigue, 分裂, 酒窝破裂, 和脱粘破裂. 

断口学的用途是什么? 

Fractography is often used when corrosion or contamination of material is suspected, or when a complete failure has occurred. Our experts will use a variety of methods to categorize the fracture into one of four modes, and provide feedback on the fracture pattern and service loading.

疲劳断口

Fatigue fracture is caused by repetitive loading of a material or component. A fractography analysis can evaluate this by checking for fatigue striations and by determining the crack propagation mode and direction. By determining whether the crack is in Stage I (initiation), 第二阶段(繁殖), or Stage III (total separation), a fractography analysis can determine where the material began to fail, and where the fracture terminated. 

解理破坏模式

相比之下, 分裂 is a low-energy fracture that occurred due to a rapid overload, 在严格的约束下, 或者处于金属的易碎状态. 对于这种类型的失败, a fractography analysis looks for macroscopic and microscopic features like river patterns, 羽毛的标记, 还有纹样, to confirm transgranular 分裂 as the fracture mode.

韧窝破裂模式

hen materials are overloaded in their ductile state or with little constraint, 可能出现酒窝破裂. When evaluating this failure mode, fractography experts will look for tell-tale signs of 酒窝破裂, 如微孔聚结. 

脱粘破裂模式

Decohesive rupture is often an intergranular failure method that involves the weakening of atomic bonds, and little plastic deformation. When combined with a full 失效分析, fractography is used to determine if these types of failures are caused by hydrogen or liquid metal embrittlement, 应力腐蚀开裂, 蠕变, 热处理脆化, 或者其他原因. 

断口分析服务

We provide detailed fractography reports for a variety of metallic materials. Using state-of-the-art equipment, in conjunction with a full 失效分析, we examine multiple characteristics to provide guidance and support about 材料特性 and best practices for materials engineering.

im体育APP优势

With a global platform of highly trained failure analysts, we are the ideal partner for fractography projects. Through advanced techniques, we can assist with virtually any type or size of fracture project. We are dedicated to supporting you through every step of the process, from initial analysis to final reporting.

For more information about our fractography services, or to request a quote, im体育APP 今天.