- •Ministry of Education and Science of Ukraine
- •Methodical instructions for accomplishment of the course paper
- •1. Introduction
- •2. Structure of the course paper
- •3. Contents of the course paper parts
- •3.2.1. Choice of material and specimens type for pendulum-type impact machine testing, determination of impact toughness
- •3.2.2. Description and estimation of a fracture type
- •3.2.3. Estimation of influence of impact specimens notch radius on fracture character
- •3.2.4. Determination of cold brittleness temperature by means of serial dynamic bending tests
- •Appendix 1 task
- •Appendix 2 impact toughness data values after the test of impact specimens kcu (type ι)
- •Kcv (type IV)
- •Appendix 3 macrophotographs of fractures
- •Appendix 4 microphotographs of fractures
- •Appendix 5 design regulations of the course paper
- •Introduction
- •Introduction
- •Rules of the explanatory note execution
- •Illustrations
- •VOcabulary
- •1. Introduction 3
- •2. Structure of the course paper 5
- •3. Contents of the course paper parts 6
Appendix 1 task
Variant |
Steel №1 |
Steel №2 |
Impact toughness |
Macroanalysis |
Microfractography |
|
|
80С, h/r |
20ХГ2Т, h/r |
KCU |
KCU |
х240 |
|
|
80С, h/r |
25Г2С, h/r |
KCU |
KCU |
х240 |
|
|
80С, h/r |
25Г2С, TS furnace |
KCU |
KCU |
х240 |
|
|
80С, h/r |
25Г2С, TS mill |
KCU |
KCU |
х240 |
|
|
80С, h/r |
20ХГ2Т, h/r |
KCV |
KCV |
х1000 |
|
|
80С, h/r |
25Г2С, h/r |
KCV |
KCV |
х1000 |
|
|
80С, h/r |
25Г2С, TS furnace |
KCV |
KCV |
х1000 |
|
|
80С, h/r |
25Г2С, TS mill |
KCV |
KCV |
х1000 |
|
|
20ХГ2Т, h/r |
25Г2С, h/r |
KCU |
KCU |
х240 |
|
|
20ХГ2Т, h/r |
25Г2С, TS furnace |
KCU |
KCU |
х240 |
|
|
20ХГ2Т, h/r |
25Г2С, TS mill |
KCU |
KCU |
х240 |
|
|
20ХГ2Т, h/r |
25Г2С, h/r |
KCV |
KCV |
х1000 |
|
|
20ХГ2Т, h/r |
25Г2С, TS furnace |
KCV |
KCV |
х1000 |
|
|
20ХГ2Т, h/r |
25Г2С, TS mill |
KCV |
KCV |
х1000 |
|
|
25Г2С, h/r |
25Г2С, TS furnace |
KCU |
KCU |
х240 |
|
|
25Г2С, h/r |
25Г2С, TS mill |
KCU |
KCU |
х240 |
|
|
25Г2С, h/r |
25Г2С, TS furnace |
KCV |
KCV |
х1000 |
|
|
25Г2С, h/r |
25Г2С, TS mill |
KCV |
KCV |
х1000 |
|
|
25Г2С, TS furnace |
25Г2С, TS mill |
KCU |
KCU |
х240 |
|
|
25Г2С, TS furnace |
25Г2С, TS mill |
KCV |
KCV |
х1000 |
|
|
25Г2С, TS mill |
80С, h/r |
KCV |
KCV |
х1000 |
|
|
25Г2С, TS furnace |
20ХГ2Т, h/r |
KCV |
KCV |
х1000 |
|
|
25Г2С, TS mill |
25Г2С, TS furnace |
KCU |
KCU |
х240 |
|
|
25Г2С, TS furnace |
20ХГ2Т, h/r |
KCU |
KCU |
х240 |
|
|
25Г2С, TS mill |
25Г2С, TS furnace |
KCU |
KCU |
х240 |
|
|
25Г2С, TS mill |
80С, h/r |
KCU |
KCU |
х240 |
Appendix 2 impact toughness data values after the test of impact specimens kcu (type ι)
Т, С |
80С, h/r |
20ХГ2Т, h/r |
25Г2С, h/r |
25Г2С, TS furnace |
25Г2С, TS mill |
100 |
0,28 |
0,92 |
1,54 |
1,42 |
2,08 |
60 |
0,17 |
0,68 |
1,45 |
1,4 |
1,89 |
20 |
0,09 |
0,63 |
1,15 |
1,35 |
1,06 |
0 |
0,07 |
0,56 |
0,82 |
1,3 |
0,86 |
-20 |
0,06 |
0,52 |
0,63 |
1,17 |
0,68 |
-40 |
0,05 |
0,42 |
0,46 |
0,94 |
0,53 |
-60 |
0,05 |
0,22 |
0,3 |
0,75 |
0,43 |
-80 |
0,03 |
0,21 |
0,14 |
0,63 |
0,32 |
-100 |
0,03 |
0,2 |
0,1 |
0,57 |
0,23 |