加工硬化和退火软化效应对<strong>316</strong>不锈钢厚壁管<strong>-</strong>管对接接头残余应力计算精度的影响

加工硬化和退火软化效应对316不锈钢厚壁管-管对接接头残余应力计算精度的影响

李索, 陈维奇, 胡龙, 邓德安

Influence of Strain Hardening and Annealing Effect on the Prediction of Welding Residual Stresses in a Thick-Wall 316 Stainless Steel Butt-Welded Pipe Joint

LI Suo, CHEN Weiqi, HU Long, DENG Dean

表1 316LN不锈钢的各向同性硬化参数和Chaboche混合硬化参数^[9]

Table 1 Parameters in the isotropic strain-hardening model and the Chaboche mixed isotropic-kinematic strain-hardening model for 316LN stainless steel^[9]

T / ^oC	Isotropic hardening model			Chaboche mixed isotropic-kinematic hardening model
	σ₀ / MPa	K / MPa	m	Q_inf / MPa	β	C₁ / MPa	C₂ / MPa	γ₁	γ₂
20	125.6	519.2	0.24	153.4	6.9	156435	6134	1410.85	47.19
275	97.6	475.5	0.28	154.7	6.9	100631	5568	1410.85	47.19
550	90.9	444.9	0.32	150.6	6.9	64341	6227	1410.85	47.19
750	71.4	259.4	0.26	57.9	6.9	56232	4108	1410.85	47.19
900	66.2	47.0	0.06	0	6.9	0.05	292	1410.85	47.19
1000	31.8	0	0	0	6.9	0	0	1410.85	47.19
1100	19.7	0	0	0	6.9	0	0	1410.85	47.19
1400	2.1	0	0	0	6.9	0	0	1410.85	47.19