tailieunhanh - Hardness Test Subjects of interest

• This chapter provides fundamental knowledge of hardness of materials along with different methods of hardness measurements normally used. • Relationships between hardness and tensile properties will be made and finally factors affecting hardness of metals will be discussed. Suranaree University of Technology Tapany Udomphol May-Aug 2007 Introduction Definition Hardness is a resistance to deformation. (for people who are concerned with mechanics of materials, hardness is more likely to mean the resistance to indentation) Deeper or larger impression Softer. | Chapter 9 Hardness Test Subjects of interest Introduction objectives Brinell hardness Meyer hardness Vickers hardness Rockwell hardness Microhardness tests Relationship between hardness and the flow curve Hardness-conversion relationships Hardness at elevated temperatures Suranaree University of Technology Tapany Udomphol May-Aug 2007 Objectives This chapter provides fundamental knowledge of hardness of materials along with different methods of hardness measurements normally used. Relationships between hardness and tensile properties will be made and finally factors affecting hardness of metals will be discussed. Suranaree University of Technology Tapany Udomphol May-Aug 2007 Introduction Definition Hardness is a resistance to deformation for people who are concerned with mechanics of materials hardness is more likely to mean the resistance to indentation Hardness impression Deeper or larger impression Softer materials Suranaree University of Technology Tapany Udomphol May-Aug .