<strong>2 GPa</strong>超高强中锰钢中的夹杂物对其高周疲劳性能的影响

2 GPa超高强中锰钢中的夹杂物对其高周疲劳性能的影响

李昌鹏, 庞建超, 王子龙, 李云杰, 李琳琳

Effect of Size and Distribution of Inclusions on High-cycle Fatigue Properties of a 2 GPa-graded Ultra-high-strength Medium-Mn Steel

LI Changpeng, PANG Jianchao, WANG Zilong, LI Yunjie, LI Linlin

表2 用Murakami公式反推疲劳强度和夹杂物临界尺寸

Table 2 Murakami formula inverts fatigue strength and critical inclusion size

No. of samples	σ_-1 / MPa	N_f / cycles	$\sqrt[]{a r e a_{i n c}}$ / μm	Murakami formula
No. of samples	σ_-1 / MPa	N_f / cycles	$\sqrt[]{a r e a_{i n c}}$ / μm	σ_-1 / MPa	$\sqrt[]{a r e a_{i n c}}$ / μm
6	600	1 × 10⁷	37.4	523	16.4
8	660	1 × 10⁷	8.6	604	5.0
10	660	1 × 10⁷	44.9	507	9.2
11	680	1 × 10⁷	8.7	603	4.2
13	680	1 × 10⁷	14.4	554	4.1