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用两种不同试剂对不同状态的热轧非调质无缝油井管用中碳微合金钢的奥氏体晶界进行了热化学浸蚀法显示,并对影响奥氏体晶界显示效果的因素进行分析。结果表明:利用控温控时水浴锅采用传统饱和苦味酸滴加微量氢氟酸和二甲苯的试剂可清晰显示不同状态下的奥氏体晶界。
The austenite grain boundaries of medium carbon microalloyed steels for hot rolled non-quenched and tempered seamless oil well tubes with different states were displayed by thermochemical etching with two different reagents, and the factors influencing the display of austenite grain boundaries Analyze. The results show that the austenite grain boundaries in different states can be clearly displayed by using the traditional saturated picric acid dripping agent with trace amount of hydrofluoric acid and xylene in the water bath with temperature control.