标准摘要
[中文适用范围]： 本文件规定了确定脆性裂纹止裂温度（CAT）的试验方法。本文件适用于具有体心立方（BCC）晶体结构且呈现韧脆转变行为的铁素体或贝氏体钢基体金属。适用材料为轧制钢板。本文件适用于抗拉强度不大于950 MPa、厚度大于6 mm且不超过200 mm的钢。止裂温度范围为−196 °C至+100 °C。本文件还规定了使用等温止裂试验在等温条件下判断有效试验结果并确定止裂温度时，对试验方法和试验程序的要求。 [外文原描述]： This document specifies a test method for the determination of the brittle crack arrest temperature (CAT). This document is applicable to either ferritic or bainitic, or both steel base metals with a body-centred cubic (BCC) crystal lattice structure that exhibit ductile to brittle transition behaviour. The applicable materials are rolled steel plates. This document is intended for steels with a tensile strength of 950 MPa or less and a thickness greater than 6 mm but not exceeding 200 mm. The range of arrest temperatures is between − 196 °C and + 100 °C. This document also specifies the requirements for test method and test procedures when using the isothermal crack arrest test to judge valid test results under isothermal conditions and in order to determine the crack arrest temperature.
英文名称Metallic materials — Steel — Method of test for the determination of brittle crack arrest temperature (CAT)