Abstract

The static fracture toughness of sheet corrosion-resistant steel 08Kh17T (0.5 mm in thickness) subjected to gas nitriding at 1075°C for 4 h and subsequent tempering at 585–700°C is analyzed. An increase in the tempering temperature from 585 to 700°C is shown to lead to a decrease in the stress-intensity factor K_c from 30.4 to 22.5 MPa m^1/2 at a reasonable high strength; the cause for the decrease is the precipitation of large chromium nitride plates.

中文翻译：

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高温氮化对铁素体耐蚀钢的断裂韧性

摘要

分析了08Kh17T薄钢板（厚度为0.5 mm）在1075°C进行气体氮化4 h，然后在585-700°C进行回火后的静态断裂韧性。在适当的高强度下，回火温度从585升高到700°C会导致应力强度因子K _c从30.4降低到22.5 MPa m ^1/2。减少的原因是大型氮化铬板的沉淀。