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在本刊1984年第1期刊登的“对硬度压痕弹性恢复问题的探讨”一文中,以材料的杨氏模量的单一形式,参照图1对维氏硬度压痕弹性恢复与负荷的关系作了以下推论:假定在超过材料屈服点σ_s以后形成的压痕,由于压痕负荷加大,形变硬化程度随之提高,使得材料的弹性极限提高,由于σ_1<σ_2<σ_3,而物氏模量不变,所以就必有ε_3>ε_2>ε_1这就表明压痕的弹性恢复与负荷成正比。然而,我们认为上述推论中存在不妥之处。就此,本文提出硬度压痕的“综合变形程度”及“综合变形体积”两术语对维氏压痕的弹性恢复与负荷的关系进行了讨论。
In the first issue of 1984 issue of “on the hardness of the indentation elastic recovery problem ” article, the material Young’s modulus in a single form, with reference to Figure 1 Vickers hardness indentation elastic recovery and load The following conclusions are drawn: Suppose the indentation formed after the material exceeds the yield point σ_s, as the indentation load increases, the degree of deformation hardening increases, so that the elastic limit of the material increases. Since σ_1 <σ_2 <σ_3, The modulus is constant, so there must be ε_3> ε_2> ε_1 This shows that the elastic recovery of the indentation is proportional to the load. However, we think there is something wrong with the above inference. In this connection, the relationship between the elastic recovery of Vickers indentation and the load is discussed in terms of the “total deformation degree” and the “total deformation volume” of hardness indentation.