The results showed that the strength of the steel is not sensitive to the quenching temperature, but the toughness at low temperature is.
结果表明，强度对淬火温度变化不敏感，而低温韧性则较敏感。
Advanced high strength after quenching and tempering has good mechanical properties and low temperature impact toughness.
高强度的高级淬火低温回火后具有良好的综合力学性能和低温冲击韧度。
The material chosen for this paper is NM360A whose heat treatment state is quenching + tempering at low temperature, it has excellent wear resistant performance.
本文所选择的的材料为淬火+低温回火状态的NM360A，具有优秀的耐磨性能。
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