探讨了在金属材料韧脆转变温度检测过程中遇到的一些问题及解决方法。结果表明：试验数据处理时采用不同的函数拟合会对最终检测结果产生较大影响，Boltzmann函数的拟合结果更贴合实际；判定韧脆转变温度的4种方法各有特点，在检测时应根据实际情况灵活运用；试样晶状区域轮廓、断口平整度特别是韧脆断面类型会直接影响剪切断面率的评价，另在检测报告中还应注明取样位置和方向；在试样数量受限的情况下，应将试样尽量分配在靠近30%~70%剪切断面率的区间来获取韧脆转变温度。

Some problems encountered in the testing of the ductile-brittle transition temperature of metallic materials and corresponding solutions were discussed. The results show that when processing the test data, the fitting functions would have a great influence on the final test result, and the fitting results with Boltzmann function were more practical. The four methods for determining the ductile-brittle transition temperature had their own characteristics, and they should be applied flexibly according to the actual situation. Specimen crystal area profile, fracture flatness, especially the ductile brittle fracture section type would directly affect the evaluation of percent shear fracture, and the sampling location and direction should be indicated in the test report. When the number of specimens was limited, specimens should be allocated in a reasonable range with percent shear fracture of 30%~70% to obtain the ductile-brittle transition temperature.